Clays, Glazes, Kilns, Machinery & Equipment for Craft, Education & Industry - PDF Free Download (2024)

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1 Clays, Glazes, Kilns, Machinery & Equipment for Craft, Education & Industry

2 Potclays Ltd, Stoke-on-Trent, Studio Ceramics Showroom.

3 Contents The Inside Story This is a catalogue for potters, sculptors, tilemakers and ceramists in craft, education and industry. Generally we have sought in its pages to bring together a combination of our own manufactured products with a selection of other brand names, many from prestigious international suppliers for whom we are U.K. distributors. In addition we have sought to provide much useful technical data so as to enable not only easier selection of the product most suitable for a particular requirement but also to provide important health and safety information. We endeavour to cater for all degrees of skill: for the expert we offer a wide range of clays, glazes, colours etc., suitable for use in advanced techniques and capable of giving superb results. On the other hand, we appreciate the difficulties of the less skilled and hence provide literature and technical advice to assist in the choice of materials, equipment and making methods. We have been renowned as leading suppliers of clay for over seventy years, most of these clays being based upon the unique deposits taken from our clay mines at Brownhills, South Staffordshire. In the last twenty years or so we have substantially increased our manufacturing capabilities to include the manufacture of specialised grogs, a comprehensive range of glazes and a wide range of top quality kilns of both electric and gas fired types. Whilst our product range is now very extensive we would however emphasise that our marketing strategy is based upon flexibility and we are able to produce clays, glazes and kilns to customers specification. If you therefore require a product not included in this catalogue, or you require any amendment or modification, do please let us know. We extend a cordial invitation to visit us at our Showrooms in Etruria, Stoke-on-Trent. You would always be most welcome and could collect any requirements on the spot thus avoiding carriage charges. Clays, Slips and Grogs Section 1 White, Red, Buff, Earthenware, Stoneware, Porcelain, Raku, Crank and General Purpose Clays. Powdered Clays, Coloured Slips, Casting Slips, Grogs, Sands, Raw Clays. Glazes and Frits Section 2 Transparent, Translucent, Opaque, Coloured, Reactive, Artistic, Earthenware and Stoneware Glazes. Brush-on Glazes. Lead, Borax, Zircon, Alkaline and Low Expansion Frits. Botz, Mayco, Spectrum glazes. Basic Materials Section 3 Basic Materials, Opacifiers, Media. Oxides and Prepared Colours Section 4 Oxides, Underglaze Colours, Glaze Stains, Velvet, Unidekor, Onglazes, Lustres. Tools and Utensils Section 5 Brushes. Modelling, Cutting, Turning and Shaping Tools. Klay Gun, Sponges, Sieves, Scales, Corks and Whirlers. Plastic Ware, Plaster Moulds, Clothing Section 6 Buckets, Bins, Bottles, Bowls etc. Protective Clothing. Plaster Moulds. Machinery and Equipment Section 7 Potter s Wheels, Pugmills, Mixers, Extruders, Pouring Tables, Rotary Sieve, Slab Rollers and Pumps. Kilns and Accessories Section 8 Silver and Etruscan top-loading kilns, Gold and EP front-loading Electric Kilns, Truck Kilns, Thor and Laser Gas-Fired Kilns. Pyrometers, Temperature Controllers and Orton Cones. Books Section 9 Index and Technical Information Section 10 Casting Slip Recipes, Conversion Tables etc. Analyses and Technical Data, Clays and Raw Materials, Health and Safety Information. Front cover illustration from a woodcut by Picolpasso 1

4 Clay Selection SECTION 1 Selecting Clays All our clay bodies are in plastic form, packed in 12.5 or 25kg packs, and ready for use. When stored in a cool but frost free situation, free from draughts and direct sunlight, the clay packs will retain their condition almost indefinitely. For general use we particularly recommend and bodies, both of which are slightly grogged. If a smooth clay is preferred then we suggest clays , , or (red), (buff) or and (white). For more specialised needs the chart and data given on pages 3-4, 6-7 and 68 will assist. The grogged clays, incidentally, may not permit such finely detailed or turned work but they have increased resistance to warping and cracking. Clays of wide firing range: Some clays have very wide firing ranges, enabling them to be used for earthenware ( C), middle temp. ( C) or stoneware ( C). These are: Buff firing: , , , Red firing: , , White firing: , , Technical Data See page 68 for typical analyses etc. Glaze Suitability/ Firing Temperatures We recommend biscuit firing at C then following with a glaze firing to a higher temperature which matures both the clay and the glaze at the same time. Each clay body and each glaze is catalogued with its firing range. When selecting a glaze for use with a particular clay it is important to select one with a firing range which exceeds the lower figure given for the clay. If this is not done the clay will be underfired and the glaze consequently may craze. Alternatively one could biscuit fire the clay above the lower figure given for the clay then glaze fire to the firing range of the selected glaze. However, this method may cause difficulty with glaze pick-up when dipping (although this can be overcome: see 3442 page 22). Bone china is invariably produced this way. Firing Rate The optimum rate depends upon the thickness of the pots and clay type e.g. thin cast and grogged bodies can be fired quicker than thrown and ungrogged ones. Ideally, biscuit firings would be slower than 100 C per hour up to 200 C and C per hour beyond that point and ending with a short soak. Glaze firings should be at C per hour but at 100 C per hour maximum from C with high carbon ball clay or fireclay based bodies. Maximum Firing Temperature This is approximately indicated by the vitrification point stated for each clay on page 68 but, with stoneware, it will be lowered by reduction firing conditions and is dependent upon other factors such as firing cycle. Consequently this figure is given only as a guide for comparison purposes. If clays are fired above their vitrification point then bloating is likely. Bloating may also result from insufficient biscuit firing or too fast firing in the later stages of the glost firing. Conversely, overlong firings may give excess heat work and cause bloating. Recipe Amendments Recipes of heavily grogged panmilled bodies , and were amended from May 1998 to give improved resistance to lime popping and efflorescence problems. These changes involve using new refractories instead of reclaimed firebrick as the grog source, finer processing of certain other clay constituents and a recipe change with which is now listed as Premium Craft Crank. The fired colour may be slightly different under certain firing conditions and a fired trial is therefore recommended. Other properties, including their superb handbuilding performance, remain the same. * Manufacturing Code: Bodies marked P are finished by our Panmilling technique. This gives excellent, reliable control of grog and water contents but is more open to occasional contamination from larger or extraneous particles arising in the ingredients or during processing. It generally produces better moisture control in grogged bodies. S denotes sliphoused bodies. These are prepared in very large batches in slip form which is finely sieved prior to or after grog addition. The purified slip is then pumped into presses for dewatering prior to pugging. Sliphousing gives greater product uniformity and virtually guarantees freedom from contamination. Its disadvantage is that it is more difficult to control grog contents (due to settling from suspension) and moisture content. It is the best technique for smooth textured bodies. Plastic Blended Clays PB denotes Plastic Blended bodies. Our latest development here at Potclays is the introduction of our plastic blended range of clays. Using this process, we are able to combine the benefits of sliphousing, for maximum purity, and lowlime wet processing, for accurate control over grog and water additions. These clays offer an alternative to their powder blended equivalents at a more competitive price. 2

5 Clay Selection St Thomas Oxidising St. Thomas (PB) Suitability General Purpose Tiles Throwing Handbuilding Slabbing General Domestic Large Domestic Slip Casting Firing Range C Product Code Previous Code ,1120P,1102PB Reduction St. Thomas (PB) PB White St. Thomas (P) White St. Thomas (PB) PB General Stoneware Buff Stoneware (S) M Buff School Clay (S) Sanded Buff (S) New Lavafleck (PB) PB Coloured Earthenware New Keuper Red (S) M Keuper Sanded Red (S) M Grogged Red (PB) Original Red S/E (S) Red Earthenware Terracotta (S) Sanded Red (S) Chocolate Black (PB) Smooth Throwing Stoneware Flecked Stoneware (P) Flecked Stoneware (PB) PB Stoneware Body (PB) PB Crank Clays Ivanhoe (P) M Craft Crank (P) Craft Crank (PB) PB Premium Craft Crank (P) M Sculpture Crank (P) SC Grogged Pink (P) Industrial Crank (P) Raku Clays Original Raku (PB) ,1154PB Coarse Raku (P) C Smooth Raku (P) S Suitability General Purpose Tiles Throwing Handbuilding Slabbing General Domestic Large Domestic Slip Casting Firing Range C Product Code Previous Code White Grogged Stoneware White Crank (PB) WBM T Material (S) Y Material (S) Y Porcelain Casting Porcelain (S) DL Porcelain (S) HF Porcelain (S) JB Porcelain (S) JAB Southern Ice Porcelain (S) Cool Ice Porcelain (S) Bone China (S) White Stoneware White Stoneware (P) White Stoneware (PB) PB White Special Stoneware (PB) New White Grog Stoneware (S) Draycott White Stoneware (S) M Modelling Clay (P) White Earthenware Ivory Earthenware (S) Studio White Earthenware (S) LT25 Grogged White (S) Grogged White (Molochite) (S) S20 Semi Porcelain (S) Paper Clay Paper Clay (PB) M Southern Ice Paperclay (S) Air-Hardening Newclay n/a Newclay Hardener n/a Gloss Finish/Sealer n/a kg Clay Samples available. Please ask for further information. SECTION 1 3

6 Earthenware & Stoneware Clay Bodies SECTION 1 PLASTIC BLENDED CLAY BODIES EARTHENWARE FIRED STONEWARE FIRED DISCONTINUED DISCONTINUED

7 Stoneware Clay Bodies STONEWARE FIRED SECTION kg Clay Samples available. Please ask for further information. 5

8 Prepared Clay Bodies SECTION 1 St Thomas Clays Oxidising St Thomas Extremely popular general purpose high earthenware and stoneware body which produces an attractive speckle under normal or slightly reducing conditions. Both tolerant and resilient it has good warp and crack resistance and is suitable for throwing and slabbing. Reduction St Thomas An attractive toasted stoneware in oxidising conditions this body really comes into its own under reduction. The excellent handling properties make it a popular choice for domestic stoneware production. White St Thomas , A light grey-white colour in both oxidation and reduction combined with outstanding handling and resilience make this body the first choice for small and large work alike. The version is particularly free of natural speckles, and both will withstand high temperatures. General Stoneware Buff Stoneware An inexpensive fireclay based body which throws well, turns easily, and is plastic, strong and reliable making it highly suitable for domestic ware. Buff School Clay Popular with stoneware potters as a production body for both oxidation and reduction, this dual purpose earthenware and stoneware clay is equally suited to use in schools. The fireclay, ball clay and china clay blend produces a body of smooth texture and medium shrinkage. Sanded Buff A lightly sanded version of our Buff School Clay, this body has a much greater tolerance to making methods and is an excellent choice for school use. New Lavafleck This new version of our highly flecked stoneware body is popular for its distinctive character. Having good throwing ability, it is now more temperature stable. Shelves need to be well coated with refractory wash to prevent sticking during firing. Coloured Earthenware New Keuper Red This high quality, smooth earthenware body has a low flux content to improve glaze pick-up and enabling it to be used at higher temperatures. When fired above 1200oC the body takes on a purple tone. Keuper Sanded Red Superb body for tiles, slab work, large pieces and murals alike, this body has high resilience and good warp resistance, yet the smooth texture allows detail to be captured. Grogged Red When used at either earthenware or stoneware, this body has good general properties, low shrinkage, and is excellent for large pots. Firing to a terracotta colour at earthenware the colour gradually changes with increasing temperature to a warm toasted brown. Original Red S/E Carefully graded and blended red clays and fireclays give this, our original, terracotta body outstanding tolerance and physical properties. It is a good domestic earthenware body which throws and turns well. Red Earthenware Terracotta This competitively priced body is a high quality blend of red clays and fireclay which give it a good colour and high fired strength. Sanded Red Based on our body, a small addition of sand enables this body to be used for larger forms and increases warp resistance making it suitable for tile production without detracting from the pleasant terracotta colour. Chocolate Black Especially good for sculpture this competitively priced clay fires to a chocolate black colour at earthenware temperatures and has a fine texture. Smooth Throwing Stoneware Flecked Stoneware , Based on a blend of ball clays, this attractively flecked body is excellent for thrown domestic ware, large or small pieces. The carefully graded fleck burns through covering glazes giving a reduction fired appearance in an oxidised firing. The version is similar to but is based on higher purity sliphoused materials and is more attractively priced. Stoneware Body This highly plastic throwing body designed for use in oxidised and reducing conditions, is suited to thrown domestic ware particularly where colour response is important. Crank Clays Ivanhoe This traditional formulation is superb for tiles, slab work and murals due to its excellent warp resistance and resilience. Although it has a high grog content, the smooth surface texture allows detail to be captured well in the toasted colour. Craft Crank , Regarded by many as the best crank clay available, Craft Crank is unsurpassed as a handbuilding clay. The unique blend of fireclays and ball clays produce a pleasant toasted colour in oxidation whilst the speckled orange-brown under reduction is unrivalled. The version is similar to but is based on higher purity sliphoused materials and is more attractively priced. Premium Craft Crank This body offers the same properties as our original Craft Crank, but with an all ball clay base. This gives the body a smoother clay base whilst retaining the same fired colour. Sculpture Crank A variation of our Craft Crank specially formulated for larger sculptural work. It contains slightly more coarse grog grades than Craft Crank and has a more open texture. Grogged Pink Obtained by a carefully controlled blend of Crank and red clays, it is a general purpose handbuilding body, which fires to a pleasant pink colour at lower temperatures and gradually darkens as the temperature increases. Industrial Crank Suitable for large sculptural work, slabbing, saggars and raku, this body is very refractory having an open texture with low shrinkage and good warp resistance. Raku Raku With superb thermal shock resistance and low shrinkage this body is not only excellent for raku work, but is also highly suited to slabbed work and is capable of firing to stoneware. 6

9 Prepared Clay Bodies Coarse Raku With coarser grogs present, this body is designed for those producing large sculptural forms which are intended for either raku or stoneware firing. The coarse textured grogs produce a pronounced fleck when fired to stoneware. Smooth Raku Specifically designed for those who want the strength and resistance for raku firing but in a body which can be thrown, slabbed and coiled, it contains more medium range grogs. Tandoori (only available by the tonne) Intended for industrial applications, this body is specially designed for the production of Tandoori ovens where high strength and excellent thermal shock resistance is required. This very coarse body is not recommended for general use or for sculptural items where a high selling price is anticipated. White Grogged Stoneware White Crank White firing, this body is based on a blend of ball clay and china clay to which is added graded molochite grogs. It is excellent for the production of large forms, slabs and tiles, and can be fired to stoneware as well as used for raku. T Material Extremely resilient and tolerant, this off-white firing body is superb for large sculpture and handbuilding use. Its low thermal expansion, low shrinkage and good warp resistance mean that it is well suited to high quality raku pieces. Y Material White firing, this blend of ball clays and china clay with molochite grogs is the ideal choice for high quality raku pieces. Its low shrinkage and excellent warp resistance combine well to produce an outstanding sculptural body. Porcelain Casting Porcelain Porcelain on a budget could be how this body is best described. The off-white fired colour and semi-translucent finish enhance the temperature and shape stability of this body, making it ideally suited to pieces where porcelain is required but high whiteness and translucency is not of primary concern. DL Porcelain Similar to the original David Leach body, this white, translucent porcelain is excellent for throwing. HF Porcelain This truly excellent white-burning translucent porcelain developed by Harry Fraser combines the finest quality and value. It throws well and is consistent and reliable. JB Porcelain Whiter firing than almost all other porcelains, this body offers good throwing properties combined with high translucency and quality at an affordable price. Southern Ice Porcelain (LBSI) Developed in Australia by Les Blakebrough, this truly outstanding porcelain is the whitest firing and most translucent porcelain available. The unique blend of high plasticity Australasian china clays set this body in a class of its own. Cool Ice Porcelain Developed in Australia, an outstanding low temperature translucent porcelain. The unique blend of high plasticity Australasian china clays set this body in a class of its own. Bone China This traditional Stoke on Trent Bone China body offers users the whitest firing clay available. Like all bone china, it is best suited to slip casting or machine making, but with suitable plasticiser additions it can be converted to a flower making clay. White Stoneware White Stoneware , This superb white stoneware body, based on carefully selected china clays and ball clays, has just sufficient added flux to maintain temperature stability yet provide exceptional ring. Excellent for small and large thrown domestic ware it stand up well even when thrown thinly. The version is similar to but is based on higher purity sliphoused materials and is more attractively priced. White Special Stoneware , White firing and smooth textured, this clay throws and handles well and is a very good body for domestic ware. The version contains a small amount of white sand which provides extra shape stability for larger domestic ware and improves the thermal shock resistance. New Draycott White Stoneware A white firing blend of ball clay, china clay and fireclay, to which a small addition of molochite grog is made, produce a smooth body suitable for throwing and modelling both small and large domestic items for oxidised or reduction firings. Modelling Clay Used by model makers for all types of projects, from original china figure models to film special effects, this clay is the most plastic modelling clay available. White Earthenware Ivory Earthenware A good earthenware body for slip casting of general and domestic ware. Studio White Earthenware This ball clay based, very plastic white firing earthenware is well suited to thrown ware. It has a good green strength and wide firing range. Grogged White Based on the to which we add a small addition of graded white grog, this body has exceptional handling properties for larger items and yet can still be easily thrown. Grogged White (Molochite) Graded molochite grogs are included in the base clay to give a body which has excellent workability for handbuilding, sculpture and tiles, yet still possesses a high plasticity for throwing. Semi Porcelain A white earthenware, semi-porcelain or Parian body made to a traditional recipe which is generally suited to slip casting or machine making. Smooth in texture but of medium plasticity. Paper Clay Paper Clay Developed in conjunction with paper clay users, this body is based on a white stoneware to which carefully controlled grades of inorganic fibres and binders have been added, giving all the benefits of Paper Clay without the shelf-life problems. Southern Ice Paper Clay All the wonderful qualities of LBSI combined with the versatility of paper clay. SECTION 1 7

10 Powdered Clays & Firebrick Grogs SECTION 1 Powdered Clay Bodies Low temperature white e-ware Fires white to off-white from Good for engobing red clays, etc Stoneware A smooth, fireclay based stoneware body, attractively priced. Light buff-grey. Firing range o C Buff body General purpose clay suitable for earthenware or stoneware. Firing range o C Chocolate Black See body 1130, page 6 for specification. Firing range o C White earthenware Firing range o C White stoneware Firing range o C. Air Hardening Clay etc Newclay A popular modelling clay which contains nylon fibres which much increases the strength when dry. Can be decorated with non-firing stains, acrylics, tempera colours, etc. Dry clay can be reconstituted Newclay Hardener When dissolved in hot water and painted on to Newclay it further increases the strength Gloss Finish Paint on to seal pieces made with Newclay to give a glossy finish. Firebrick Grogs These grogs are produced by crushing and grinding reclaimed firebricks and other refractories under dust-extraction conditions. This removes the ultra-fine dust fraction and avoids the widely varying dust content found in other grogs. Gradings are nominal s to dust (3mm-dust) s to 20 s (1.5mm - 0.8mm) s to 30 s (0.8mm - 0.4mm) s to dust (0.8mm - dust) s to dust (0.4mm - dust) s to 85 s (0.4mm - 0.2mm) s to dust (0.2mm - dust) Calcined China Clay Grogs Used as clay substitute to lower shrinkage of engobes etc. The coarser grades are used as very pure white grogs Calcined China Clay 22-60s Calcined China Clay 30-80s Raw Materials 1273 WAD Fireclay N6 N6 fireclay in wad (plastic) form. Fires buff-grey with strong speckle at stoneware. Tremendously plastic. Hi-Pur Grogs Firing to a light grey-white colour and of exceptional purity, our Hi-Pur range offers the ultimate in grog material. Virtually guaranteed lime-free, this carefully graded material allows the coarsest of clay blends to be prepared with complete peace of mind and with the confidence that there will be no nasty surprises from impurities dust Porcelain Firing range o C. Low temperature porcelain for slipcasting. Sieve through 60 s mesh sieve H.F.Porcelain Firing range o C. Should be slipped through 60 s or finer to give a strong, white translucent porcelain. 8

11 Coloured Decorating slips Clay-water slips for dipping and trailing in the manner of traditional slipware. Compounded from earthenware bodies but capable of firing to stoneware. Water may be added or removed to alter the consistency. Under certain conditions dilution may be desirable to avoid flaking cc or 5lt. Casting & Decorating Slips Casting Slips Prepared to a specific gravity of (34-36ozs per pint). Supplied in polythene containers, these slips are correctly deflocculated ready for use but in certain circ*mstances it may be desirable to thin them slightly, in which case add just a few drops of Sodium Dispex per gallon. Casting Slips Suitability Chart SECTION 1 Casting Slips are produced by Suitability 1221 White 1215 Sky Blue 1213 Salmon Pink 1216 Pastel Green 1214 Yellow Ochre 1217 Cobalt Blue adding about 0.25% - 0.5% of deflocculant and also water to powdered or plastic clay. Over-addition of deflocculant causes cracking and sticking of casts on the mould. Under-addition Casting Slips General Purpose Tiles General Domestic Firing Range C Product Code is sometimes desirable but causes Potclay White L 1218 Cocoa 1219 Fir Green 1222 Green slips to thicken on standing although they will thin again on stirring (i.e.thixotropic). Fast Cast DH Low Temperature White Black Red Medium Blue 1224 Dark Blue 1225 Yellow Sodium Silicate and Soda Ash are the usual deflocculants but we White Earthenware Parian Semi-Porcelain M strongly recommend Sodium Buff Earthenware/Stoneware Dispex for topping-up addition and Stoneware Brown 1227 Black slip adjustment. Porcelain Bone China

12 SECTION 2 Frits & Glazes Glazes This comprehensive range of basic glazes provides the potter with proven, reliable glazes formulated by experienced ceramists and checked by qualified teachers and studio potters. All powdered glazes featured in these pages are classified as either low solubility or leadless. The low solubility glazes contain lead but this is present in a fritted, non-toxic form. Such glazes can be safely used in schools and studio potteries since they meet the requirements not only of the Education Memorandum 517 but also the stringent requirements of the Factory Acts. The leadless glazes, of course, do not contain lead as a recipe ingredient and may therefore be considered extra safe. Glazes marked * apply a thin coat only. L denotes leadless glaze. LS denotes low solubility glaze. Transparent Glazes 2200 Transparent Raku. L ( C) 2201 White Crackle. L ( C) 2202 Glossy general purpose leadless glaze. L ( C) 2203 Excellent craze resistance*. L ( C) 2204 Majolica glaze. High gloss. Excellent colour response. LS ( C) M Crystal glaze. Outstanding shine and colour response. LS ( C) 2205 Good gloss general purpose glaze. LS ( C) 2206 Glossy general purpose leadless glaze L ( C) 2208 Semi-porcelain-low stoneware glaze L ( C) 2209 Stoneware transparent L ( C) 2209M Stoneware transparent L ( C) 2210 Transparent for once-firing L ( C) Translucent Glazes 2230 Earthenware matt translucent* L ( C) 2231 Stoneware matt translucent L ( C) 2231M Special Matt Stoneware L ( C) White Opaque Glazes 2241 Glossy white tin L C 2242 Delft white tin LS C 2246LS Low sol vellum white L C 2246M Vellum white matt. Satin texture L C 2247M Glossy zinc titania Chinese white L C 2248 Glossy white zircon. General purpose glaze L C 2249M Matt white zircon L o C 2250 Glossy tin L o C 2251 Glossy tin L o C Satin white L o C Opalescent white L o C 2361 Glossy white opaque stoneware L o C 2370 Frosted off-white matt tin glaze L o C 2376 Vellum off-white dolomite glaze L o C 2380 Shiny tin glaze L o C Economy Glazes Basic, low-cost glazes, popular in schools Grey-blue earthenware glaze L o C 2291 Mottled brown stoneware glaze L o C Frits Fritting involves the melting together of glaze materials (some of which are soluble in water or stomach acids) to produce a combination which is insoluble (or relatively so). Lead bisilicate is the frit generally used in low solubility glazes and Standard Borax frit for leadless glazes. The High Alkali frit will give beautiful crackle blues from copper oxide addition and the Soft Borax will give turquoise. For detailed analyses please ask for frit pamphlet Lead Bisilicate frit LS ( o C) 2262 Lead Sesquisilicate frit LS ( o C) 2263 Standard Borax frit L ( o C) 2264 Soft Borax frit Slightly alkaline and gives turquoise from copper addition. L ( o C) 2265 H.T.Borax frit L Suitable for mid temperature and stoneware glaze addition. ( o C) 2266 Ferro Crystal frit 3110 A very low alumina frit which assists spectacular crystal L ( o C) growth in glazes. Featured in many American recipes 2268 Calcium Borate frit A fritted substitute for colemanite (new formulation). L ( o C) 2270 White Zircon Borax frit L ( o C) 2275 High Alkali frit L ( o C) 2279 Low Expansion frit Immense craze resistance and useful additive to glazes L ( o C) which craze. Milkiness in large amounts. To order only: 25kg min order 10

13 Coloured Earthenware Glazes Coloured Glazes: Powdered & Brush-on A range of quality glazes supplied in powdered form requiring only an addition of water and sieving (see glaze preparation notes below) The transparent coloured glazes are especially suited for use over decorated ware. The opaque or speckled glazes will give particularly good effects when double-dipped to give varying glaze thickness and colour tone White Tin o C L Rich Amber o C L.S 2246LSM Vellum White o C L. 2301M Speckled Olive o C L. 2247M Chinese White o C L Crimson o C L Glossy Tin o C L Victorian Burgundy o C L.S 2290 Grey Blue o C L Tortoiseshell o C L.S SECTION 2 For a huge range of coloured earthenware glazes in brush-on form please see our Mayco and Spectrum sections 2306M Yellow o C L.S 2307M Honey o C L Trans. Blue o C L Trans. Green o C L Rockingham o C Glazes on the following list contain a natural flecking material which can be coarse in nature. It is therefore recommended that these glazes are not sieved through a mesh finer than 40 s during preparation. Using a finer sieve will remove some of the natural fleck material thus changing the fired appearance of the glaze: 2290, 2291, 2301M, 2314, 2362 (s/ware) To order only: 25kg min order 2311 Pastel Green o C L.S Black Matt o C L. Raku Glazes also see 2200 Transparent Raku and 2331 Persian Crackle Turquoise o C L. DISCONTINUED DISCONTINUED DISCONTINUED Banana o C L.S Coral Red o C L.S Toffee o C L.S Baby Blue o C L.S Holly o C L Speckled Cream o C L.S Dappled Fern o C L Damson o C L. 2315M Shiny Black o C L Turquoise Green o C L Cobalt Blue o C L. 11

14 SECTION 2 Artistic Glazes: Powdered Glaze Preparation These notes apply to all powdered glazes whether earthenware, stoneware or porcelain etc Sprinkle the powder into a suitable container of water, stir, then sieve through an 80 s lawn or finer. Leave to settle overnight and pour off surplus water. Stir, then add water if necessary to achieve desired consistency which depends upon porosity of biscuit ware but normally will be around ozs. of dry glaze per pint of water ( gms per litre) i.e. about 1kg per litres water. Artistic Glazes These unusual and interesting glazes will give the results described when applied thickly and fired on flat surfaces. Vertical surfaces and thinner deposits may give different effects. Glazes marked should not be used on tableware (see page 64). The remaining glazes are suitable for all wares. DISCONTINUED Glaze Suspension Settling is not normally a problem with Stoneware glazes but may be troublesome with some earthenware or Artistic glazes, the glaze settling into a hard deposit at the bottom of the containers which is difficult to reconstitute. The addition of 1% of Bentonite (3411) to the glaze powder prior to preparation will help prevent glazes from quickly settling and such addition is therefore common practice. Even so, this may have little effect on any tendency for the glaze to set hard once it has settled. A flocculant such as 3415 Calcium Chloride or 3442 Magnesium Sulphate added to the glaze will, however, have the effect of causing the glaze to settle in a more loosely packed arrangement of the constituent parts which are then more easily reconstituted. The method is to mix a little of the flocculant with hot water in a cup until no more can be dissolved. Leave to cool and then add a few drops only of the liquid per litre of glaze, followed by thorough mixing. Larger additions will cause the glaze to thicken (this being helpful if very vitreous pieces are to be dipped) Bright Red o C L.S. 2333Gemini Blue o C L.S Bright Yellow o C L.S 2335Special White o C L. 2330Pewter o C L.S. 2336Cloud Nine o C L.S Persian Crackle o C L. 2337Apollo o C L.S. Consistency Measurement Once the correct glaze consistency has been achieved it should be measured so that it can be repeated next time. Weigh exactly 100cc s of the mixed glaze and dividing the resultant weight in grams by 100 to obtain the specific gravity. Alternatively one pint can be weighed to determine the pint weight. A popular method is to use our glaze hydrometer (ref 5828 page 38) to quickly obtain a reading which can easily be checked at each glazing session & the glaze adjusted if necessary Gold Lustre o C L.S Ivory Mottle o C L.S Inca o C L.S Opalescent Ivory o C L M Opalescent Green o C L. To order only: 25kg min order 12

15 Reactive Glazes Used as low temperature stoneware glazes fired at C or as underglazes, being covered over with higher temperature glazes, which then combine during stoneware firing to give excellent combination effects. The Reactive Slip M similarly combines with glaze to give varied reduction effects in electric kiln firings. It can be applied to biscuit or leather hard pots. Reactive & Stoneware Glazes: Powdered Stoneware Glazes - The Mineral range These glazes all fire in the range C and are semi-matt becoming shinier with increasing temperature. All stoneware glazes are leadless. SECTION Chalcedony Moonstone Lapis Lazuli Amethyst Red Granite Jade M Satin White M Satin Blue-Beige Rhodonite Azurite Topaz M Shiny Beige Oatmeal M Dappled Coffee Burgundy To order only: 25kg min order M Reactive Slip Tenmoku Chun (applied over M) 13

16 Stoneware Glazes: Powdered Stoneware Glazes All glazes are leadless and pass all known safety statutes. The descriptions generally refer to results in electric kilns but all can be fired under reduction. They fire generally in the range C with an optimum of C except where otherwise indicated. Supplied in powdered form. SECTION Transparent 2352 Bright Blue 2353 Red Brown 2355 Frog Green 2356M Blue Grass 2357M Burgundy Red 2358 Chun Celadon 2361 Shiny White 2362 Yellow Brown See P11 for advice on sieving 2363 Pale Blue 2364 Ivory Oatmeal 2365 Oatmeal 2366 Blue Grey 2370 Frosted Off-White 2372 Tenmoku 2374 Albany 2376 Vellum Off-White 2377 Crystal Brown 2378 Vellum Blue 2379 Copper Red (Oxidised) 2379 Copper Red (Reduced) 2380 Shiny Tin 2383 Marbled Blue 2385 Ivory-Oatmeal 2386 Light Oatmeal 2388M Turquoise 2389 Tamba 2391 Green Beige Crystal 2392 Bright Orange Red Barium Blue Glazes for Porcelain Glazes applied over 1120 Buff Clay Porcelain Green Porcelain Red Porcelain Trans Porcelain White Matt White Porcelain Blue 14

17 Low Temperature Glazes: Brush-on Mayco Low-Fire Cone Glazes Mayco manufacture more than 500 different glaze products in a variety of colours, finishes and textures to inspire and stimulate your imagination. These low-temperature (cone 06-04/ C) glazes are ready mixed in brush-on form. Most colours are available in 4 or 16fl/oz and a few are also available in US gallons. Series 2000 Cone 06 Unleaded GLOSS S-2101 Natural Clear S-2102 Snow White S-2138 Pink Champagne S-2139 Floral Pink S-2140 Pretty n Pink S-2130 Crystal Coral S-2141 Just Peachy S-2105 Orange Slice S-2142 Orange Squash S-2143 Rustic Orange S-2104 Salmon Mousse S-2172 Bright Orange S-2122 Victorian Red S-2168 Red Hot Red S-2103 Raspberry Whip SECTION 2 S-2170 Bright Red S-2144 Clarret S-2145 Mystic Mauve S-2146 Bordeaux S-2171 Purple S-2147 Orchid S-2148 Lilac S-2117 Wisteria Purple S-2154 Winter Mint S-2149 Blue White Ice S-2132 Sheer Blue S-2131 Aqua Mist S-2150 Marine Blue S-2151 Blue Lagoon S-2115 Tahiti Blue S-2152 Corn Flower Blue S-2116 Mosaic Blue S-2153 Old Navy S-2123 Royal Teal S-2113 Nautical Jade S-2114 Night Sea S-2155 Schezuan Green S-2112 Pastel Jade S-2110 Glade Green S-2111 Ivy Green S-2156 Evergreen Fir S-2157 Holiday Green S-2158 Green Sapphire S-2159 Pale Yellow S-2160 Summer sun S-2109 Sassy Yellow S-2126 Ivory Linen OPAQUE S-2107 Dry Champagne S-2128 Mocha Ice S-2161 Golden Oak S-2162 Saddle Tan S-2163 Mudpuddle Brown S-2118 Cocoa Bean S-2119 Rich Chocolate S-2120 Double Fudge S-2127 Smoked Oyster S-2164 Silver Cloud S-2165 Sooty Grey S-2166 Old Smoke S-2121 Shiny Black S-2565 Cloud White S-2566 Almond S-2574 Tea Rose S-2577 Wild Rose S-2586 Bing Cherry S-2585 Violet Reflections S-2560 Queens Blue S-2561 Country Blue S-2581 Periwinkle S-2587 Big Sky Blue S-2588 True Blue S-2580 French Blue S-2592 Deep Teal S-2562 Canton Jade S-2579 Mediterranean Teal S-2564 Sun Yellow S-2590 Intense Yellow S-2591 New Leaf S-2578 Elf Green S-2593 Jungle Green S-2582 Caramel Apple S-2589 Bear Brown SPECSTONE S-2427 Fiesta S-2421 Berry Parfait S-2425 Pepperwinkle S-2424 Blue Enamelware S-2423 Teal Splash S-2422 Evergreen Ash S-2137 Clear Wine Speck S-2134 Licorice Speck S-2167 Holliberri S-2133 Clear Blu Speck S-2136 Chocolate Speck S-2169 Eggnog MATTE S-2401 Cotton Seed S-2402 Peppercorn SLG-6 Cream SLG-17 Light Grey SLG-2 Stone S-2200 Marshmallow White S-2201 Ivory Cream S-2223 Soft Yellow S-2243 Mustard Yellow S-2242 Orange S-2220 Autumn Orange S-2221 Pumpkin Tart S-2224 Coral S-2225 Brick Red S-2240 Scarlet S-2226 Rose Berry S-2227 Parchment Pink S-2228 Orchid S-2229 Violet S-2230 Deep Purple S-2231 English Blue S-2208 Deep Sea Blue S-2232 Indigo Blue S-2233 Light Olive S-2234 Clover Green S-2235 Dark Sage S-2236 Tan S-2237 Taupe S-2218 Milk Chocolate S-2238 Dark Gray S-2239 Slate S-2209 Black Velvet 15

18 Low Temperature Glazes: Brush-on Crystalites: Cone 06 Unleaded S-2701 Peaco*ck Eyes S-2702 Northern Lights S-2703 Berryberry Pie S-2704 Plum Jelly S-2705 Desert Mist S-2706 Spiced Banana S-2707 Lily Jade S-2708 Oriental Carmel S-2709 Cappuccino Mint S-2710 Evergreen Flurry S-2711 Tahiti Grape S-2712 Monsoon Seas S-2713 Buttercup Blue S-2714 Herb Garden S-2715 Spotted Kiwi SECTION 2 S-2716 Celestial Blue S-2717 Rocky Road S-2718 Cosmic Black S-2719 Cranberry Burst S-2720 Orange Fizz S-2721 Stars & Specks S-2722 Blue Chip S-2723 Grape Divine S-2724 Lotus Blossom S-2725 Safari S-2726 Cheetah S-2727 Poppy Fields S-2728 Poinsettia S-2729 Citrus Splash S-2730 Red Halo S-2731 Kaboom S-2732 Sedona Classic Crackles: Cone 06 Unleaded CC-101 Transparent CC-102 White CC-103 Raw Silk CC-104 Plum Blossom CC-105 Orange Pekoe CC-106 Fuji Brown CC-107 Green Tea CC-108 China Sea Pottery Coat: Cone 06 Unleaded PC-501 Terra Cotta PC-502 Speckled Buff PC-503 Khaki PC-504 Concrete PC-505 Black Pottery Cascade: Cone 06 Unleaded PC-601 Clear Cascade PC-602 White Cascade PC-603 Amber Cascade PC-604 Black Cascade Elements: Cone 06 Unleaded EL-101 Oyster Shell EL-102 Sandstorm EL-103 Sea Spray EL-104 Heather Moor EL-105 River Birch EL-106 Tidal Pool EL-107 Amber Ash EL-108 Jade Moss EL-109 Blue Ridge EL-110 Mudslide EL-111 Ruby Creek EL-112 Tornado Sky EL-113 Spanish Moss EL-115 Iron Moss EL-116 Blue Stone EL-117 Waterfall EL-118 Blue Grotto EL-119 Burnished Steel EL-120 Black Ice EL-121 Copper Adventurine EL-122 Malachite EL-123 Patina EL-124 Stormy Blue Elements Chunkies: Cone 06 Unleaded EL-201 River Bottom EL-202 Bark EL-203 Coal Dust EL-204 Glowing Embers EL-205 Jade Pebble EL-206 Meteor Shower EL-207 Gold Mine EL-208 Moss Creek EL-209 Night Sky EL-210 Bayou Rain EL-211 Volcanic Glow EL-212 Molten Rock Astro Gem Textural Glazes: Cone 06 Unleaded AS-518 Amethyst AS-515 Coral Sand AS-524 Terra Cotta AS-519 Green Sappire AS-535 Emerald Green AS-548 Seafoam Quartz AS-532 Turquoise AS-547 Ice Blue AS-534 Blue Sapphire AS-531 Lapis Blue AS-545 Purple Quartz AS-513 Golden Sand AS-516 Sand Stone AS-527 Smoky Topaz AS-510 White Opal AS-539 Gray Quartz AS-523 Gray Granite AS-512 Black Diamond NB. It is not recommended to use textured or crackle glazes on surfaces intended for food or drink. For more information on Mayco products and instructions for use please visit 16

19 Low Temperature Glazes: Brush-on Spectrum Low-Fire Glazes Ready mixed in brush-on form Wide range of colours and textures Different glazes from the Low-Stone range can be layered to produce interesting and exciting results Most colours available in 4 or 16 fl/oz, some also available in US gallons. SPECTRTUM Low Stone Glazes Unleaded Fire to Cone 06/04 ( O C) Clear Evening Iceburg Emerald Indian Wheatfield Burnt Sugar Autumn Molten Camel Desert Star Dust Cloudy Sky Old Copper Gator Buffalo Hide Leather Olive Shadow Green Summer Leaves Stone Branch Forest Moss Midnight Iron Earth Russet Hazelnut Slate Mermaid Lizard Skin Tuscan Sun Oxblood Mocha Franciscan Dove Gray Pistachio Strawberry Speckled Purple Tortoise Sky Blush Gray Turquoise Haze Shell Speckled Blue Rain Chocolate Adobe Chip Spotted Plum Spotted Spotted Tortilla Deep Sea Cadet Blue Sea Green Dragonfly Mediterranean Glacier Desert Blue Wind Robins Egg Green Moonlit Sky Sunset Red Meteor Espresso Polished Shower Armour Eggplant Smoke n Kelp Forest Rainforest Tarnished Gunmetal Bullfrog Phoenix Mirrors Silver Green Red For more information on Spectrum products and instructions for use please visit Raku Clear White Turquoise Cobalt Blue Celadon Emerald Muddy Waters Yellow Red * 4* Gator Skin Flash Metallic Flash Galaxy Nebula Sunspot Mars Deep Space Starry Night * 1 Dinnerware safe. Contains no lead or cadmium ingredients. Certified AP Non-Toxic and conforms to ASTM D Dinnerware safe. Contains some heavy metals and/or cadmium compounds but passes test for lead and cadmium release. 3 Contains no lead or cadmium ingredients. May invite bacteria growth due to glaze fissures. Not recommended for surfaces in contact with food and drink. Certified AP Non-Toxic. 4 Contains some lead and/or cadmium compounds and does not pass test for lead and cadmium releases. Not recommended for surfaces which come into contact with food or drink. 5 Dinnerware safe. Contains no lead. Contains encapsulated cadmium pigment. Certified AP Non-Toxic and conforms to ASTM D Caution: None of these products should be taken internally. Contain ingredients not suitable for ingestion or inhalation. Note: In order for glazes marked 1 2 or 5 to be dinnerware safe, they must be fired to the recommended firing temperature. Botz Low Temperature ( C) Glazes Ready mixed in brush-on form. Distinctive and colourful effects which vary with thickness and the surface to which they are applied. These glazes meet all COSHH and CHIP safety regulations. Leadless, but also zinc, cadmium and antimony free and so are especially safe for use in schools. Supplied in 200cc jars.. SPECTRTUM GLAZES HEALTH & SAFETY Raku Glazes Glazes marked *contain lead. Tiles fired to 870 O C then removed whilst glowing and reduced in newspaper. SECTION White Transparent Cognac Gold Adventurine Bottle Green Dutch Blue Antique White Sun Yellow Granite Blue Autumn Blue-Brown Casablanca Emerald Glimmer Cornflower Carnival Confetti Ice Flower Blue Cloud Ivy Christmas Star Polar Night Deep Sea Wild Cherry Pansy Heather Peaco*ck Butterfly Waterfall Picasso Blue Blue Flower Pine Wood Green Crystal Ginster Cumulus Shiny Ochre Adventurine Pebble Cherry Red Midnight Blue Turquoise Crystal Starry Sky Copper Gold Blue Black Crocodile Black Mauritius Blue Signal Red Fire Red Rose Red 17

20 High Temperature Glazes: Brush-on Spectrum Hi-Fire Cone 4-6/Cone 9-10 Glazes The Spectrum Hi-Fire Cone 4-6 ( O C) and Cone 9-10 ranges ( O C) are ready mixed in brush-on form and provide a wide range of colours and textures. Different glazes from the same range can be layered to produce interesting and exciting results. Available in 454cc (1 US pint) jars. Lead Free* and Dinnerware Safe** For more information on Spectrum products and instructions for use please visit Series Cone Transparent Peach Wedgwood Blue Dusty Rose Crimson SECTION Black Butter Yellow Coral Turquoise Holly Green Texture Milkn Honey Texture Moonscape Texture Chocolate White Satin Clear Satin White Satin Mottle Satin Speckle Satin Wedgwood Satin Peach Satin Black Satin Turquoise Texture Oasis Charcoal Purple Chocolate Brown Navy Blue Royal Blue Teal Blue Lime Green Texture Kiwi Fruit Texture Cascade Texture Wheat Texture Navy Texture Mottle Texture Autumn Texture Chowder Fuschia Texture Chrome Texture Cobalt Texture Iron Pebble Stone Olive Stone Texture Honey Texture Bronze Green Stone Texture Topaz Texture Burgundy Dark Red Bright Red 1166 Bright Orange Bright Green Bright Purple Dark Purple Texture Mulberry Texture Plum Texture Leopard Texture Hot Chowder Texture Rusty Scales Texture Dark Ripple Cinnamon Ripple Antique Mottle Oatmeal Mottle Texture Misty Lagoon Texture Cloudburst Texture Jungle Texture Dark Cloud Hunter Green Forest Green Soft Pink Clear Crackle Pewter Gold Rain Gold Muddy Waters Reactive Purple Fire Engine Red Christmas Red Neon Orange 1196 Hot Pink 1200 Series 5 Cone Transparent Satin Crackle Satin Oyster Texture Avocado Coral Turquoise Euro Blue Black White Ruby Texture Agate Texture Oatmeal Cinnamon Lava 1225 Texture Honey Tea Texture Emerald Texture Grey Blue Matte Grey Texture Coral Matte Sand Texture Seafoam Texture Blue Satin Black Light Pink Purple Lilac Teal 1244 Sky Blue Grey Matte Euro Blue Sandstone Slate Desert Rock Yellow Old Rock Broken Rock Rock Pit New Rock Moon Rock Pebble Rock Yellow Lava Blue Lava 1264 Mottle Lava Green Lava Brown Lava Gold Lava Orchid Lava Dark Red Bright Red Bright Orange Bright Green Bright Purple Dark Purple Fire Engine Red Christmas Red Neon Orange Hot Pink 18 Please see page 17 for key to H&S numbering * except 1189, 1190 ** except 1188, 1189, 1190

21 Glaze Crystals Spectrum Glaze Crystals Lead-free and dinnerware safe when fired to at least cone 06 (1000 O C). These crystals are very versatile and can be used successfully up to cone 6 (1230 O C). They can be used with any glaze in this firing range to produce a great variety of different appearances and can also be intermixed. To use, sprinkle the crystals onto a wet glazed surface or mix with the glaze before brushing on. Please be aware that, due to varying expansion coefficients, some of these crystals may cause crazing on some glazes, particularly at stoneware temperatures. Please test for suitability in your application. Supplied in 1 oz. jars. For more information on Spectrum products and instructions for use please visit SECTION 2 Crystals on top of: 21CR01 Cobalt Blue 21CR02 White 21CR03 Yellow 21CR04 Dark Brown 21CR05 Reactive Brown 21CR06 Green 21CR07 Maroon 21CR08 Reactive Blue 21CR09 Reactive Green 21CR10 Pewter 21CR11 Gold 21CR12 Clear Clear Black Transparent Black 19

22 High Temperature Glazes: Brush-on SECTION 2 Botz Stoneware Glazes These glazes are as safe as it is possible for glazes to be. They are completely non-toxic and are especially suited for use in education and training establishments wherever safety issues are especially important. However, their distinctive and attractive fired results have made them very popular with potters and hobbyists both as a decorative medium and covering glaze Transparent Rapsgelb Orange Zinnoberrot Ultramarin Kaktusgrun They can be used conventionally and fired in the range C with a minute soak or alternatively can be used as a decoration applied under or over other stoneware glazes. They then act as reactive glazes to provide interesting and sometimes stunning combination effects Weib Glanzend Schwarz Glanzend Craquele Hellblaueffekt Pazifik Tiefblau Ready mixed in liquid form and packed in 200 or 800cc screwtop jars Blaugraueffekt Schwarzblaueffekt Wieselbraun Temmokubraun Créme Gesprenkelt Cremeweib Granitschwarz Indigo Turkisgranit Grungranit Salamander Graubasalt Beigegranit Sandgranit Ockergranit Lilaeffekt Eiskristall Travertin 20

23 Basic Materials Technical information relevant to this section is given at the back of this catalogue. Colouring oxides are listed separately in a later section Alumina Hydrate Used to introduce alumina into glazes and as a batt wash for painting onto shelves Alumina Hydrate (granular) A granular grade useful as placing sand Calcined Alumina Refractory additive for glazes, batt washes etc Barium Carbonate Poisonous. A secondary flux in stone ware and porcelain glazes used generally to produce a vellum matt glaze surface. Small quantities (up to 2.5 %), are used in some clay bodies to prevent scumming arising from soluble salts Basalt Lava Volcanic lava in ground form. Melts into a dark brown glass at stoneware temperatures and useful as a basis for coloured and tenmoku glazes. Black Feldspar Batt Wash Specially blended mixture incorporating zircon to produce an excellent glazeresistant batt wash. Mix with water and paint onto the kiln shelves Ball Clay (ESVA) Highly plastic pale ivory burning powdered clay excellent for use in white bodies and in glazes. Increases mechanical strength of bodies and casting slips. Vitreous at 1280 C Ball Clay (Hyplas) Recommended for earthenware or stoneware body formulations. Fires ivory buff colour. Powdered. Approx 70% SiO Ball Clay HV Popular in many stoneware bodies Ball Clay (Hymod AT) High-iron ball clay Bentonite Weathered and decomposed volcanic ash. Highly colloidal material of extreme plasticity added to glazes as a suspending agent (up to 3% by weight, and into clay bodies to improve plasticity (up to 5%). High shrinkage Quest White Bentonite Used in porcelain bodies Bone Ash A secondary flux in glazes and occasionally used as an opacifier. The essential constituent used to produce translucency in bone china bodies Borax Poisonous. Vigorous low-temperature glaze flux. Slightly soluble in water and so usually introduced into glazes in the form of a frit Calcium Chloride Used as a flocculant in glazes. (See Suspension of Glazes, in information section on page 12) China Clay (Kaolin) A selected white-burning residual clay of above-average plasticity ideal for producing white earthenware and porcelain bodies. Also for general purpose use in glazes and bodies Grolleg china clay Porcelain china clay White firing china clays of world-wide reputation. Both are exceptionally white yet reasonably plastic Colemanite (Boro-Calcite) A useful and powerful flux in pottery glazes introducing an insoluble form of boron with calcium Gerstley Borate 2CaO 3B 2 O 3, 5H 2 O. A variety of colemanite, a naturally occurring mineral, specially imported by us from the USA. Mentioned in many American text books, this is a popular flux in studio glazes Cornish Stone Decomposed Granite. Used as a secondary flux in glazes and as an alternative to feldspar in both bodies and glazes. Not as fusible as feldspar due to higher silica content. Low iron content gives good whiteness Cristobalite A powdered, pre-fired form of silica. Improves craze resistance of slips and bodies.hazardous if inhaled. Deflocculants See Dolomite A naturally occurring combination of calcium and magnesium carbonates providing a secondary flux for high temperature porcelain and stoneware glazes. 3424M Dolomite 150s A very fine, slightly whiter grade. Feldspar Feldspar is the major flux in clay bodies and in high temperature glazes some of which may contain 70% or more feldspar. Potash feldspar is the one generally used and recommended. The term potash, soda, lime etc. denotes the principal but not the only flux present. 3426M Potash Feldspar (Orthoclase) 3427M Soda Feldspar (Albite) SECTION 3 21

24 Basic Materials 3428 FFF Feldspar A mixed grade of good consistency Forshammer Feldspar A high temperature feldspar for use in white bodies and glazes Gum Arabic Used in water as a medium for underglaze colours and in glazes as a binder Ilmenite, fine Liquid Mask - see AC Matting Agent To give a matt finish to glazes add 5-45% depending upon glaze and degree of mattness required. glazes although not an exact replacement for flint in clay bodies.hazardous if inhaled Resist See 3469 Wax Emulsion. SECTION WAD N6 Fireclay (Plastic) Refractory clay used as an additive to stoneware bodies to produce a more open texture and speckling - especially under reduction. Fires from light to warm buff but darker under reduction. 3431M Flint Very refractory material used to provide silica in bodies and glazes. Increases firing temperature and craze resistance but reduces plasticity and shrinkage. In dust form is hazardous if breathed in (see Safety Notes ) Glaze Binder/Hardener Glazes for application by brushing generally incorporate up to 5 % of binder. Also useful in 0.5-2% addition to avoid colour transference or for maiolica painting. Grogs - See page 8. Also see Silica Sands in this section Galena A natural lead ore used in high lead raku glazes etc. Not suitable for production glazes Ilmenite, coarse Generally seeds recrystallisation in titania bearing glazes, but in its coarse form will directly produce specks in bodies and glazes Lepidolite A lithium based feldspar useful as a secondary flux in stoneware and porcelain glazes. Limestone. See 3470 Whiting Lithium Carbonate A good alkaline flux used as a substitute for soda and potash when a good craze resistance is required. Provides typical alkaline colour response Magnesium Carbonate Secondary high temperature flux producing a buttery or satin matt surface (up to 10%). Excess may cause crawling and pinholing. Improves craze resistance Magnesium Sulphate Epsom Salts. Used to flocculate i.e. thicken glazes to assist suspension and application to relatively vitreous biscuit ware. Media: See page Mouldmaker s Size High quality size used in production of plaster moulds Nepheline Syenite Mineral mixture of feldspar and hornblende with little silica. More fusible than feldspar it can be used as a replacement to reduce the maturing range of glazes and bodies. Opacifiers See 3467 Tin Oxide and 3476 Zircon. Also 3468 and Potter s Plaster A selected high quality superfine plaster ideal for the production of moulds. Mixing ratio: 5lbs plaster to 3 pints water or 100 to 78 parts by weight respectively High Density Plaster A harder setting dense plaster used in the production of block and case moulds. Mixing ratio: 6.25 lbs plaster to 3 pints water or 100 to 60 by weight Quartz. (Silica) Introduces silica and alternative to flint in 3453 Pearl Ash K 2 CO 3 Potassium Carbonate. An extremely vigorous flux for low temperature glazes Rutile An ore containing titanium dioxide with iron oxide used to produce a mottled buff brown colour (3-8%) especially in the presence of ilmenite. Increases opacity of glaze. Exciting effects may be achieved in combination with stains or colouring oxides. Silica See 3431M Flint and 3452 Quartz Silica Sands Used as sand-grog for clay bodies or as placing sand White Sand No. 1 Medium white sand 30 s - dust Fine Sand No. 2 Light buff sand 40 s - dust Buff Sand No. 3 Buff medium, 30 s - dust. An excellent general purpose grog Buff Sand No. 4 Buff coarse, 16 s-dust. 22

25 Basic Materials 3457 Silicon Carbide SiC A finely ground material used as a local reducing agent in glazes to obtain reduced effects in oxidised (electric) firings Soda Ash Sodium Carbonate Used in the preparation of casting slips in combination with sodium silicate. Its solubility in water makes it effective as the alkaline glaze constituent of Egyptian Paste Sodium deflocculant A specially formulated liquid blend, easy to use for the preparation of casting slip. Add 200 cc plus 1 litre water to 10 kg clay (plastic) or 250 cc plus 3.5 litres water to 10 kg powdered clay Sodium Dispex An alternative to sodium silicate. Gives improved stability and mould life. Liquid and easy to use Sodium Silicate 75tW Sodium Silicate 140tW Liquids used in preparation of casting slips by deflocculation Buff Stopping A filler for cracks in buff earthenware or stoneware biscuit. Mix with water to thick paste Talc French chalk. Soapstone. Magnesium Silicate. Secondary flux introducing magnesium (see Magnesium Carbonate 3441) and improving craze resistance of glazes. A flux for clay bodies -especially flameproof and low temperature ones Tin Oxide (Stannic Oxide) The most reliable, oldest and most widely used opacifier. Produces a somewhat softer white and is less refractory (neutral) than zircon. 5-10% usually added for opacification Titanium Dioxide A cream white opacifier often used as a constituent of vellum white glazes Wax Emulsion Resist Used to paint an area of ware over which no glaze is required, the glaze not adhering to the resist which burns away during firing Whiting Chalk, Limestone Calcium Carbonate. The main source of calcium in glazes and extensively used as a flux in stoneware and porcelain glazes. Assists hardness and durability and in large quantities produces mattness. 3471M Wood Ash A mixed grade (unseived) for ash glazes Wollastonite (Calcium Silicate). An alternative to whiting as a source of lime in stoneware glazes. Less dissociation and therefore useful where pinholing is a problem Zinc Oxide The source of zinc and, in small amounts, useful as a flux in middle and high temperature glazes imparting a wider firing range and good craze resistance. Above 10% produces a matt texture under slow cooling conditions Zirconium Oxide An alternative opacifier to Zircon. 5-10% for semi opaque, % for fully opaque Zircon (Zirconium Silicate) An ultra-fine form of zircon used as an opacifier. Add 5-8% for semi opaque and 10-15% for fully opaque glazes Zircon A cheaper, waterground version suitable for batt washes, abrasion resistant matt glazes etc. AC306 Mender For mending broken greenware. Moisten greenware, apply Mender, press firmly together and hold for a few seconds and then remove any excess. Also used to fill cracks in biscuit ware: soak cotton fibre in Mender, fill in the crack and refire. AC303 Mask A latex based product for application to greenware or bisque. On bisque apply 2 coats (wet upon wet). After glazing or decorating, the mask can be peeled off by lifting a corner. It then peels away like any rubbery latex substance. Better than paper masks etc. Handy 2 ounce jar. SECTION 3 23

26 Oxides & Prepared Colours SECTION 4 Oxides The raw pigments from which prepared colours and stains are compounded, oxides may be painted directly onto clay, biscuit or unfired glazed ware (majolica), or used as stains for bodies and glazes producing the characteristic colours described. Further technical data appropriate to this section is given at the back of this catalogue Chromium Oxide Versatile pigment producing characteristic opaque green but producing red, khaki or yellow in presence of zinc. Incorporation with tin produces pink (chrome-tin pink) Cobalt Carbonate 4504 Cobalt Oxide (Black) The most powerful ceramic pigments giving a range of transparent blues ranging from intense blue or blueblack in lead and lead less glazes to a vivid blue in alkaline ones. The carbonate form is weaker but gives less risk of specking Copper Carbonate (Cupric Carbonate) 4506 Copper Oxide (Black) (Cupric Oxide) Transparent green under normal neutral or oxidising firing conditions except in alkaline glazes where turquoise is developed deepening to transparent Persian blue in strongly alkaline ones. Under reduction conditions a copper red colour is obtained (sometimes referred to as ox-blood or sang de-boeuf). Carbonate form is weaker but gives less risk of specking. NOTE Copper compounds must not be incorporated into any low solubility glaze if the resultant glaze is to be used on domestic wares in contact with foods. There is no problem with copper in leadless glazes. Ilmenite See page 21. Iron Compounds Iron compounds have great natural variety and are the most popular colouring pigments. In addition to the characteristics detailed below, most of them produce yellow-tan tints (depending on quality and thickness) in lead-tin glazes. At stoneware temperatures black-brown tenmoku effects are developed whilst black and grey-greens are achieved under reduction firing conditions Iron Chromate Ferric Chromate Produces grey. Black in combination with cobalt Iron Oxide-black Ferrous Oxide 4510 Iron Oxide-red Haematite. Ferric Oxide Iron Oxide-red synthetic Ferric Oxide 4512 Iron Oxide - yellow ochre Ferric Oxide. Produces browns and honey yellows in glazes depending upon amount. Yellow ochre weakest but most miscible of the iron oxides. All are good painting pigments Manganese Carbonate Generally produces colours obtained from manganese dioxide but is weaker and more finely divided Manganese Dioxide Black, finely ground powder giving sepia or grey-brown colour in lead and leadless glazes with plum or purple colour in alkaline tin ones. With cobalt, or cobalt and iron, produces good black. Also called manganese oxide Nickel Oxide Will produce brownish greens, brown and grey glazes but more commonly to modify or grey the colours obtained from other colouring oxides by combination Rutile Ores containing titanium dioxide with iron oxide used to produce a mottled brown colour in glazes - especially in combination with a trace of ilmenite Excellent for modifying other stains or oxides. Buff-brown fired colour Tin Oxide (Stannic Oxide). Generally used as a white opacifier in glazes but also useful as a white decorative pigment - either alone or mixed with a little transparent glaze Vanadium Pentoxide Generally used in combination with tin oxide in glazes to give opaque yellow but also directly as pigment. Use of underglaze colours. All colours and stains can be fired up to 1300 C except those marked EW which are stable up to 1140 C but change colour tone above this. All colours in powder form. Underglaze colours may be applied onto clay ware (green hard), or onto biscuit ware using our 3446 media. Mixing of colour and media must be very thorough and is best achieved by working the colour into the media using a palette knife in a rubbing or lapping action. If sufficient flux is added, colours and stains can be made self-glazing and matt colours developed. Powder colours mixed with 3446 Media provide the cheapest and most usual way of applying underglaze decoration. Use of glaze & body stains. Glaze or body stains are normally used for the preparation of coloured glazes (5-8% addition) or coloured slips (10-18% addition) followed by sieving through 120 s mesh. They can also be used in maiolica fashion (with flux addition) and generally as underglaze colours in which case a small flux addition (e.g. 2263) is also desirable. All the above colours and stains are manufactured to a stringent safety specification. Nevertheless, care should be taken to avoid them being taken in to the body by mouth or inhalation. When not in use ensure bottles and containers are tightly closed. 24

27 Underglaze colours Glaze & Body Stains Underglazes & Stains: Powdered 4530 EW Flesh Tint 4531 EW Crimson 4532 EW Purple Damson 4591 Hi Temp Red 4560 Porcelain Pink 4562 Clover Red 4563 Lilac Tingle 4534 Ice Blue 4535 Light Blue 4536 Cornflower Blue 4592 Hi Temp Yellow 4564 Speedwell Blue 4565 Cornflower 4566 Britannia Blue 4537 Mazarine Blue 4538 Turquoise Blue 4539 Turquoise Green 4593 Hi Temp Orange 4568 Turqouise 4569 Derby Green 4570 Moss Green SECTION Emerald Green 4541 Chrome Green 4542 Victoria Green 4571 Bramley Green 4572 Spite Yellow 4573 Egg Yellow 4543 Lime Green 4544 Vivid Yellow 4545 Egg Yellow 4575 Peachbloom 4576 Honey 4577 Scorch Brown 4547 Golden Brown 4548 Chestnut 4550 Brick Red 4578 Oxtail 4579 Mid Grey 4580 Carbon Black 4551 Sepia 4552 Ivory Grey 4553 Mid Grey 4590 Hi Temp Red 4591 Hi Temp Red 4592 Hi Temp Yellow 4556 Black 4557 White 4590 Hi Temp Red 4593 Hi Temp Orange 25

28 Underglaze Pencils, Raised Accent Colours & Superstroke Pens SECTION 4 Underglaze Pencils For fine line drawing, script, shading, etc. Use on biscuit ware. After decorating, dust lightly with a soft brush to remove excess particles then glaze (preferably with transparent L.S. glaze) and fire. These pencils are also ideal for permanent marking of trials. The red and yellow can be fired up to 1060 C (cone 4). All other colours can be fired up to 1300 C (Cone 10). Additional Pencils not shown Red Set of 10 Pencils ( through to -10) Peaco*ck Blue 4526/1 Black 4526/2 Brown 4526/3 Blue 4526/4 Green 21RAC0 Natural 21RAC5 1 Honey 21RAC10 Rose 21RAC15 Bermuda 1 21RAC1 1 21RAC2 1 21RAC3 1 21RAC4 1 White Grey Black Brown 21RAC6 Bright Yellow 1 21RAC11 1 Lavender 1 21RAC16 1 Hunter Green 1 21RAC7 Lime Green 1 21RAC8 1 21RAC9 1 Orange Pink 21RAC RAC RAC14 1 Light Blue Royal Blue Turquoise Spectrum Superwriter Pens Lead Free, Non Toxic, Dinnerware Safe Low-Fire Cone 06/04 ( O C) Spectrum Raised Accent Colours Lead Free, Non Toxic Low-Fire Cone 06/04 ( O C) These are slip-based colours (or engobes) which are available in 2oz. applicator pens with a fine metal tip for decorating on greenware or bisque. They create embossed or raised designs on ceramic decorative work because the colours do not flatten out when they are fired. They are also available in 16oz. squeeze bottles, which can be used to refill the pens or which can be used for slip trailing applications. For more information on Spectrum products and instructions for use please visit: KEY 1 Dinnerware safe. Contains no lead or cadmium ingredients. Certified AP Non-Toxic and conforms to ASTM D-4236 See Page 17 for more information These pens are a versatile new product from Spectrum containing Superstroke colours which fire to a glossy finish without a glaze. They can be used on bisque,alone or under a glaze; on top of an unfired glaze in majolica fashion; or as an on-glaze, on top of a fired glaze.the soft squeeze 2oz. applicator pen is comfortable and easy to use. All colours are dinnerware safe and non-toxic, making them ideal for use in schools. KEY 4526/5 Crimson 4526/6 Yellow Snow White Banana Fizzy Orange Sunshine Wally Walnut 415 Black Velvet Yummy Yam Honey Mustard 425 Laser Lime 1 1 Dinnerware safe. Contains no lead or cadmium ingredients. Certified AP Non-Toxic and conforms to ASTM D /7B Light Brown 4526/8 Lilac Bowling Green Xmas Green Sherwood Forest Robin s Egg Blue Lagoon Electric Blue Midnight Blue Whine Sweet Pea 5 Dinnerware safe. Contains no lead. Contains encapsulated cadmium pigment. Certified AP Non-Toxic and conforms to ASTM D /9 Azure 4526/10 Olive Leaf Clover 463 Atomic Sour 1 Tangerine Grapes Fire Engine Red Xmas Red Hot Pink See Page 17 for more information 26

29 Unidekor colours Ready to use liquid decorating colours that have a very wide firing range from 1000 C to 1260 C. They are extra-safe in that they do not contain any lead, cadmium, barium or zinc in their composition and they are therefore especially suitable for use in schools where they can be considered non-toxic. The colours are very strong to give rich vibrant colour tones but they can be thinned if necessary with water to enable delicate colour washes etc. Brushes can simply be washed out with water. Furthermore, the colours can be intermixed to produce intermediate tones. A major attraction is that although they are designed as fluxed underglaze colours for application to bisque or clay ware, they can also be used in majolica tradition onto unfired glazed ware or as an overglaze colour onto fired glazed ware. They can be used on earthenware, redware, stoneware or porcelain and are therefore supremely versatile colouring pigments. The fluxed nature of the colours results in them firing matt to semi-matt around 1000 C becoming slightly shinier as firing temperature increases. Available in 30ml jars. Brush-on Underglazes Spectrum Underglazes Lead Free, Non Toxic, Fires to Cone 06-6 ( O C) A full palette of rich, vibrant colours that are opaque with 3 coats, semi-opaque with 2 coats and semitransparent with 1 coat. They are compatible for use under most clear glazes. Can be applied on greenware or bisque and can be used with or without a clear glaze covering. Chart shows the unglazed colour in the upper left half of the tile and the colour when covered by a clear gloss glaze in the lower right half of the tile. These samples were fired at cone 05. Spectrum underglazes generally have good temperature stability up to cone 6 and for many colours to cone 10. Please note that when fired higher than cone 04 you may get small colour variations from those shown on the chart. 501 White 510 Tan Ivory Light Yellow Yellow Orange Bright Yellow English Rose Baby Pink Flesh Aztec Brown Walnut Brown Choc. Brown French Brown Black Charcoal Light Grey Taupe Chamois Light Beige Sand Tea Honey Mustard Lime Green Mid Green Sherwood Green SECTION Egg Yellow 4002 Cobalt Blue 4003 Red Wine 4004 Black 4005 Chrome Green 4006 Turquoise Chartreuse Dark Olive Hunter Green Prussian Blue Sky Blue Turquoise Lavender Blue Grey Bright Blue 4007 Rosewood 4008 Neutral Grey 4009 White 4010 Wood Brown 4011 Basalt Grey 4012 Capri Blue Cobalt Blue Blue Velvet Navy Blue Denim Blue Purple Fuschia Wisteria Burgundy Ruby Bright Peach Nectarine Rust Red Terra Cotta Salmon Medium Pink Rose Lilac Royal Purple 4013 Lilac 4014 Plum Blue 4015 Fern Green 4016 Birch Green 4017 Sun Yellow 4018 Salmon Warm Grey Light Green Leaf Green Jade Blue Green Teal Blue Dark Red Bright Red Bright Orange Bright Green Bright Purple Dark Purple Fire Engine Red Christmas Red Neon Orange Hot Pink 4019 Whiskey Brown 4020 Mocha 4021 Blue-Green 4042 Orange 4043 Bright Red 4044 Dark Red KEY 1 Dinnerware safe. Contains no lead or cadmium ingredients. Certified AP Non-Toxic and conforms to ASTM D Dinnerware safe. Contains no lead. Contains encapsulated cadmium pigment. Certified AP Non-Toxic and conforms to ASTM D See Page 17 for more information 27

30 Brush-on Underglazes Amaco Velvet Underglazes Velvets are vibrant, semi translucent, fluxed colours of remarkable versatility and offer three alternative techniques: 1) When left unglazed and then fired 1000C-1100C, they give semi matt surfaces. With slightly higher firing they assume a slight sheen. Glazing is not essential and thus permanent decoration of finely detailed modelling can be done without having the detail rounded away by subsequent glazing. 4V301 Flesh 4V302 Beige 4V303 Terra Cotta 4V304 Straw 4V308 Yellow 4V309 Deep Yellow 4V310 Warm Tan 4V313 Red Brown 4V314 Chocolate Brown SECTION 4 2) When used in normal underglaze fashion they can be glazed by dipping or spraying using 2205 or other suitable glazes, or transparent brush-on glaze can be used. The colours then intensify and give glossy results. 3) They can be used in majolica fashion on the unfired glaze, the flux content of the colours giving more predictable results. Velvets offer the advantage of taking the guess work out of colour planning. They fire true to colour as applied from the jar and can be intermixed to create a palette of hundreds of shades. They tolerate a wide firing range and can be used on porcelain and stoneware with the exception of orange and red. Velvets vitrify about cone 4-6. They can be used on clay, biscuit or on the glaze and can be applied by brushing, sponging or spraying. 4V315 Peach 4V326 Medium Blue 4V345 Light Green 4V316 Light Pink 4V327 Turquoise Blue 4V350 Orange 4V317 Medium Pink 4V328 Iceberg 4V353 Dark Green 4V318 Rose 4V332 Teale Blue 4V354 Leaf Green 4V320 Lavender 4V333 Avocado 4V355 Shadow Green 4V321 Lilac 4V334 Flaxen 4V356 Pearl Grey 4V322 Purple 4V336 Royal Blue 4V360 White 4V323 Salmon 4V341 Blue Green 4V361 Jet Black 4V325 Baby Blue 4V343 Chartreuse 4V366 Teddy Bear Brown Underglaze Application Methods 4V367 Mist Grey 4V368 Antique Ivory 4V369 Fawn 4V370 Velour Black 4V381 Amethyst 4V382 Red 4V383 Light Red 4V384 Real Orange Brushing - Keep the brush fully loaded at all times. For solid coverage, as in back-grounds, apply 3 or 4 coats of colour, working in opposite directions with each layer of colour. Wait for water sheen to disappear between coats. Sponging - Pour colour onto a glazed tile. Saturate slightly dampened fine sponge with colour and lightly pat onto the greenware or bisque; permitting first coat. to dry thoroughly before applying the next. Solid colour backgrounds can be quickly achieved with this method which eliminates the streaking that often appears when using a brushing method. Airbrushing - Dilute colour with water to the consistency required for a smooth spraying application. For solid colour coverage airbrush 3 to 4 coats; for shading, one coat is generally sufficient. Antiquing - Dilute 2 parts colour with 1 part water, for an antiquing solution. Apply to bisque with as large a brush as practical. Allow to dry. Remove the colour from the raised areas with a moist sponge, rinsing and turning the sponge often to produce clear highlights - exposing the embossed design. 28

31 The Firebird range Intermixable low-lead series. Smoothness of application and vividly flamboyant colours are characteristics of this series in which the usual lead content has been minimised thus enabling the colours to meet low-lead release specifications provided that they are used conventionally and properly fired. They are in powdered form Pink 4629 Royal Blue Overglaze Colours, Lustres, Media & Accessories 4621 Salmon 4630 Kingfisher 4623 Scarlet 4631 Lapis Blue 4624 Signal Red 4632 Light Blue 4626 Burgundy 4634 Chrome Green 4627 Damson 4635 Fir Green 4628 Purple 4636 Lime Green Preparation of Colours Mix thoroughly by working the colour into the media on a very smooth surface using a palette knife in a rubbing action. Pick up the required amount of colour on a brush moistened with turpentine if the medium is fat-oil based. Alternatively a water based medium (such as 3444) may be used. In this event use water to moisten and clean brushes. Firing Overglaze Colours Colours and lustres are normally fired in the range o C. Lower firing temperatures will give matter finishes but this is not recommended on the surfaces of ware in contact with foods. The kiln should be well ventilated (vent plug out) until about o C to clear away gases from burning away of media etc. Vent plugs can then be replaced and firing continued to o C. Switch off and leave until cool Lemon Yellow 4644 Golden Brown 4639 Naples Yellow 4645 Sepia Lustres Liquid metals for application to glost ware followed by firing at 750 C 4670 Bright Gold 4672 Bright Platinum Copper Mother of Pearl Media For mixing with powdered colour Screen Printing Medium 250gm A thicker bodied medium specially designed for screen printing Underglaze Medium 100cc (also available cc) Designed for underglaze colours only. Water based Buttercup 4646 Grey 4641 Old Gold 4647 Black 4649 Transp. Flux 4648 White General Purpose Medium 100cc (also available cc) PVA type, water based. For use with underglazes, oxides and overglaze colours Turpentine (Pure) 500cc (also available lt) For thinning and cleaning all media (except 47051/52 and 47061/62) Marbling Solution 25gm (also available gm) Apply over touch-dry gold or lustres. Gives attractive vein craquelle effect after firing Gold Eraser 4642 Orange 4643 Red Brown Gold Fluid Writer Has tiny reservoir to take liquid gold. Ideal for fine line decoration & script Pre-coated Decal Paper (10 pack) A special gummed paper for making transfers. On-glaze enamels can be painted or screened onto the paper. When dry, the decorated area is then brushed over with a covercoat solution. After drying the transfer can be cut out and placed in water for a few minutes. The transfer film can then be slid away from the paper and applied to the fired, glazed ware. Smooth out the water film under the transfer and fire to 750 C. SECTION 4 29

32 HOBBY CERAMICS at Potclays 30 Bisque We stock one of the largest ranges of quality bisqueware in the UK. We are partners in bisque with Mayco Colors USA and also manufacture our own unique range. A catalogue is available on request. Courses, Seminars and Training Training courses are held throughout the year, including an international course in conjunction with Mayco Colors USA, in addition to our frequent seasonal oneday classes. One-to-one intensive training available by special arrangement. NEW! Hot Glass Kilns, Hobby Kits, Glass Pens and hands-on courses are all part of our new venture into the world of hot glass for the hobby market. You ll be amazed at how easy it is to achieve stunning results with this exciting craft! Non-fired Products We stock a huge assortment of non-fired products including acrylics, glitters (both brush-on and spray), sponge shapes, brushes, turntables, beads and so much more. Let your imagination run riot! Moulds To Order Top quality plaster moulds available to order from leading US manufacturers. Imported once every six weeks Hobby Slip Top-quality Potclays White and Potclays FastCast earthenware casting slip manufactured on-site to long established recipes. Technical Support Sound advice is always at hand if you need guidance on any of our products. Just give us a call. We especially cater for... Ceramic Cafés Paint-your-own-Pottery Studios Contemporary Studios Contact us for details of our special pricing structures. Schools and Colleges We offer special discount structures on some of our products for schools and colleges. Please ask us for more information. To find out more, please call: or us: sales@potclays.co.uk We d be happy to send you an information pack.

33 Brushes from Royal & Langnickel 144 different brushes in 6 hair categories. Ergonomically designed with thick acrylic handles and a soft, no slip, rubber grip. RSG150 (6 sizes) Golden Taklon Shader RSG155 (6 sizes) Golden Taklon Short Shader RSG160 (4 sizes) Golden Taklon Angular RSG170 (4 sizes) Golden Taklon Filbert RSG190 (2 sizes) Golden Taklon Dagger RSG250 (13 sizes) Golden Taklon Round RSG255 (4 sizes) Golden Taklon Short Round RSG393 (3 sizes) Fitch Deerfoot RSG585 (5 sizes) Golden Taklon Script Liner RSG595 (6 sizes) Golden Taklon Short Liner RSG650 (3 sizes) Golden Taklon Deerfoot RSG700 (2 sizes) Golden Taklon Glaze Wash RSG711 (3 sizes) Golden Taklon Stroke RSG725 (3 sizes) Ox Hair Wash SECTION 5 RSG730 (3 sizes) Golden Taklon Comb RSG750 (3 sizes) Bristle Glaze RSG825 (3 sizes) Bristle Fan RSG850 (4 sizes) Golden Taklon Fan RSG930 (3 sizes) Golden Taklon Filbert Comb RSG995 (2 sizes) Sabeline Mini Mop RSG999 (1 size) Mini Mop RSG1150 (5 sizes) Pure Sable Shader RSG1160 (3 sizes) Pure Sable Angular RSG1170 (3 sizes) Pure Sable Filbert RSG1250 (7 sizes) Pure Sable Round Detail RSG1325 (4 sizes) Bristle Round RSG1400 (3 sizes) White Blending Mop RSG1425 (4 sizes) Bristle Bright RSG1460 (4 sizes) Bristle Foliage RSG3000 (4 sizes) Combo Round RSG3010 (5 sizes) Combo Bright RSG3020 (3 sizes) Combo Filbert RSG4000 (3 sizes) White Nylon Round RSG4010 (5 sizes) White Nylon Bright RSG4020 (6 sizes) White Nylon Filbert RSG4090 (2 sizes) White Nylon Flat See over for size chart 31

34 Brushes from Royal & Langnickel SECTION 5 Brush Size Chart /0 5/0 10/0 20/0 1/8 1/4 3/8 1/2 3/4 S M RSG150 RSG155 RSG160 RSG170 RSG190 RSG250 RSG255 RSG393 RSG585 RSG595 RSG650 RSG700 RSG711 RSG725 RSG730 RSG750 RSG825 RSG850 RSG930 RSG995 RSG999 RSG1150 RSG1160 RSG1170 RSG1250 RSG1325 RSG1400 RSG1425 RSG1460 RSG3000 RSG3010 RSG3020 RSG4000 RSG4010 RSG4020 RSG4090 Big Kids Choice Brushes Brush Sets A large range of brushes and accessory products designed with young children in mind. The Big Kids Choice range is bright and colourful, with a comfortable soft grip and short handles ideally suited to little hands. As pictured RBKCOMBO72 RBKRND72 RBKFLAT72 Assorted Set Round Set Flat Set RBKAPRON1 Clear PVC Child s Apron - sml RBKAPRON2 Clear PVC Child s Apron - lge Great value sets featuring a variety of different brush shapes and sizes. Ideal for schools, colleges and other educational establishments. As pictured RCOMBO144T Set of 144 Brushes (wood handle) RCOMBO144B Set of 144 Brushes Also available RSG-12 Quality Set of 12 Soft Grips w/brush Roll RSET-TK-C Set of 4 Assorted (wood handle) RSET-TK-M Set of 5 Pointed Rounds (wood handle) RSVP-5 Value Pack Set of 10 Brushes (wood handle) RSVP-7 Value Pack Set of 10 Brushes (wood handle) RCAN-1 Economy Set of 144 Rounds (wood handle) Taklon Bristle mixed Taklon Taklon Bristle Taklon ass td 32

35 Airbrushing Equipment SECTION 5 Badger Airbrushing Equipment Badger specialist airbrushing and spraying equipment is used by professionals worldwide. This selected range of their equipment enables accurate and delicately detailed or shaded work to be done with ease Mini Spray gun set A simple, single action external mix model suitable for fast coverage of larger areas. This tool has a spray pattern which is adjustable from 18mm to 50mm by turning the paint tip at the front of the gun. Supplied with attached 22cc (3-4oz) jar, propel regulator valve, 1.8metres (6ft) vinyl air hose, extra 22cc jar, with cover & instruction booklet. Sprays glazes or colours for base coating, shading, highlighting, stencilling etc Spray gun set Consists of Mini Spray gun with attached 22cc (3-4oz) jar, propel regulator valve, 1.83m (6 feet) vinyl air hose, extra 3-4oz jar with cover, propel can and instructions Airbrush (350 series) set A single action, simply constructed external mix medium tip airbrush supplied with propellant can, attachable 22cc (3-4oz) jar, 1.8metres (6ft) vinyl air hose, 60cc (2oz) jar with cover, propel regulator, spanner & instruction booklet Gives 6mm to 30mm spray. Ideal for underglaze or overglaze work Airbrush (200 Series) set An excellent, single action, internal mix airbrush supplied complete with 22cc (3-4oz) jar, protective cap, 1.8 metres (6ft) vinyl air hose, jar of propellant, propel regulator, spanner, and instructions & storage case. Can be used with 7cc colour cup or 2oz ounce or 3/4 jars. Incorporates needle adjuster for more or less colour. Gives 1.5mm to 38mm spray Ideal for all colours and detailed glaze work. Internal mix produces more uniform spray pattern with a softer appearance. Accessories Micon Air Compressor Diaphragm compressor compatible with all makes of airbrush 1/6hp, 160 watts, cfm output Propellant A 567cc (20oz) canister Propellant Regulator Enables finer adjustment of spray patterns. Jars & Jar Adaptors You will need several jars with lids and 2 or 3 adaptors cc (2oz) jar with lid cc (3/4oz) jar with lid Jar adaptor (200 & 250 Series) Jar adaptor (350 Series) Filter Fits in the colour jar. Helps avoid blockages Air Hose (Vinyl) 1.9m (6") lightweight air hose. Not suitable for use with compressor Air Hose (Braided) A heavy duty hose suitable for compressor attachment. 3m (10 ) long with swivel connection each end, one end for brush other end 1/4" female for attachment to Hose Adaptor A 6.4mm (1/4") adaptor for fitting air hose to compressor. SECTION 5 33

36 Painting Accessories & Whirlers SECTION Biscuit Tile (6 x 6") (Not shown) 5778 Gold Fluid Writer Has tiny reservoir to hold gold or liquid on-glaze colour for fine line decoration, script etc. Palette Knives Quality hand ground carbon steel with polished rosewood handles mm (2.5") blade mm (4") tapered blade mm (6") blade mm (8") blade mm (10") blade 5786 Wipe Out Tool Specially shaped rubber wiper at each end enables painted edges to be levelled or cut back when using overglaze colours etc. DISCONTINUED Whirlers Whirlers are metal turntables which prove useful in a variety of ways in the manufacture and decoration of pottery. All the whirlers listed have steel spindles running freely in brass oilite bearings except 5795 which has ball bearings Aluminium Whirler 203mm dia. x 76mm high (8" x 3" high) Weight 1.8kgs 5791 Aluminium Whirler 203mm dia. x 152mm high (8" x 6" high) Weight 2.7kgs Steel Whirler 8" dia. x 4.5" high Steel Whirler 15" dia. x 6" high Steel Whirler 17" dia. x 6" high. Much heavier and has greater momentum than alloy whirlers Cork Faced Whirler As but the steel top is finished with a cork face "x 6" Whirler "x 6" Whirler Palette Knife 90mm Palette Knife 78mm Iron Whirler 8x Iron Whirler 10x Steel Whirler 7x Steel Whirler 11.75x Heavy Whirler 303mm dia. x 102mm high (12" dia x 4" high) Weight 16.4kgs Lining Wheel Adjustable for convenient height to enable work to be set at exactly the right position. Made from steel and aluminium. Runs on steel pivot with oilite bushes for very free running. Rubber sleeve fitted to stem. Base has adjustable feet. Finished in hammer black with cork top on the 10" dia. wheel head. Height: 26" - 32" adjustable. Weight: 10.5 kgs 34

37 Modelling Tools Wire Modelling Tools mm (8") Twisted wire ends to give textured effect. Boxwood Modelling Tools Beautifully finished hand made tools used for modelling and decoration of clay in its plastic state. Each tool is approximately 152mm (6") long Palette Knife 120mm Throwing Knife 65mm Fine Texture Tool Coarse Texture Tool 5805-S2 6 Boxwood Set (6pcs) 5805-S3 6 Boxwood Set (12pcs) Mop 10x30mm Mop 10x27mm Mop 6mm 5805-S4 8 Boxwood Set (6pcs) Flat curve and serrated edge Chisel edge and large radial Medium radial and serrated angle Chisel edge and curved angle Point and medium radial Point and straight angle Curve and long serrated edge 5805-Set Set of 1 each SECTION S2 Plaster Tool Set (8pcs) 5806-S1 Stainless Steel Set (7pcs) Mini Steel Set (6pcs) Tool Kit (7pcs) Tool Kit (11pcs) Pottery Tool Kit (8pcs)

38 Modelling Tools SECTION 5 Forged Steel Modelling Tools Ref. No 5806 followed by -F number as below: e.g F01. F0l Curved and spear shaped ends with coarse teeth for cutting and removal of material F02 Sturdy splayed and screwdriver shaped ends. F03 Oval with slight upturn and slanted palette ends F04 Spear shaped, with slight upturn, and curved end, with fine and coarsely serrated teeth. F05 Fine and coarsely serrated edges with smooth and sharp opposite end. F06 Sharp edged and coarse toothed ends. F07 Oval and wide palette ends. Slight upturn on each with a flexibility ideal for smoothing and filling. F08 Sturdy spatula and screwdriver shaped ends. F09 Finely serrated and curved ends for intricate work. F10 Coarse and fine toothed with sturdy, rounded ends F11 Small spatula and needlepoint end. F12 Blunt point and ball end. F13 A sturdy tool rounded on one end and flat on the reverse side, with a wide splayed opposite end. F14 Large and small smoothly shaped ends. F15 Shaped ends with finely serrated edges. F16 Arrowhead and small screwdriver shaped ends. F17 Large sturdy double ended tool with 90 o bends. F18 Small sturdy double ended tool with 90 o bends. Fl9 Rigid smoothing and filling tool. F20 Large and small hooked ends, finely serrated on opposite edges. F21 Small round, curved ends. F22 Half round with flat reverse side double ended tool. F23 Smooth rigid and rounded tool with one flat side and fine point and edges Expertly designed and popular double ended tools used for shaping and carving clay or plaster surfaces. F01 F02 F03 F04 F05 F06 F07 F08 F09 F10 F11 F12 F13 F14 F15 F16 F17 F18 F19 F20 F21 F22 F Potter s Knife A general purpose knife for cutting, fettling etc. Sturdy 54 mm (2.1") blade shaped to a point Kemper Cut-out Tool, 4.5" Cut-out Tool Heavy Duty, 5.75" Used to cut openings and pierced design work in leather hard clayware. The 4.5" is for thin walled delicate work, the 5.75" for heavier work. Both are double edged for reverse cuts and sharp turns Kemper Clean-up Tool 6" High quality stainless steel blades with double-edged keenly sharpened cutting edges Salt & Pepper Drill For small holes in greenware Kemper Clean-up Brush 6.7" For cleaning small holes, delicate handles Sgrafitto Tool Fork Sgraffito Tool Fine twin line point, and spear shaped ends Sgraffito Tool with Brush Lace Tool Plastic Knife Lucy Tool For cleaning clay from mould surfaces and working on greenware Greenware Seamline Cleaner Spring steel cutting head set in a durable plastic handle for removing seam lines and other raised blemishes. 36

39 Modelling Tools Double Tip Texture Roller For applying a roughened texture , -02, -03 Turning Tools Ground spring steel blade, stainless steel shaft and beech wood handles , -02, -03, -04 Turning Tools Stainless blade. polished handles 16mm (5/8") cutting face Hole Cutters Ideal for producing holes in lamp bases, teapots, etc., and general decoration. The blade is half round to prevent clogging and is set in a wooden handle. Round: mm (3/16") mm (5/16") mm (1/2") mm (1/8") to 6mm (1/4") tapered Square: mm (3/32") mm (1/8") mm (3/15") mm (1/4") 5811 Strip Tools Designed for fine and medium cutting, turning, trimming and carving work these tools have sharp, ground steel cutting edges and coiled wire ferrules. Two sizes: 6" & 8" 5812 Coilers Made from hardened spring steel with cutting edge. Produce coils quickly and easily. Also useful for turning and creating a fluted decoration mm (1/2") dia mm (3/4") dia RWN N Needles Two gauges of needle are available, both set into wooden handles. The fine gauge is used for trimming pot rims and the heavier gauge for pierced and sgraffito work Fine Thick Clay Cutters Nylon with hardwood toggles: mm (12") cutter mm (18") cutter 5816 Twisted Wire Cutter Twisted wire producing shell ridging or whirl pattern when the pot is cut from the wheel or modelling board. 330mm (13") long. Hardwood toggles Kemper Wire Cutter Stainless Steel Cutter 457mm (18") stainless steel wire giving smooth cut. Hardwood toggles Bow Trimmer Used for trimming clay, especially in pressed and slab work. Fine wire 44mm (1.75") effective width. 5819N Bow Harp Enables a stack of slabs to be cut from a single block of clay by repeatedly repositioning the wire in the next higher groove after the bow has been drawn through the clay. 380 mm (15") effective width with 3/8" pitch. Complete with rings and 23 gauge s.s. wire RWN Replacement wire for 5819N. SECTION Ribbon Tool Wire Tool Wire Tool Loop Tool LT Loop Tool LT Loop Tool LT Heavy Duty Tool Heavy Duty Tool Heavy Duty Tool Sculpture Tool Set (3pcs) 37

40 Modelling Tools SECTION 5 Rolling Pins 5820 Small Rolling Pin (not shown) 355 x 48 mm (14" long x 1.875") Large Rolling Pin 510 x 18 mm long (20" long x 1.875") Hessian Squares For rolling or pressing operations. Rolling Guides (Wood) (not shown) Pair 1 1/4" x 1/4" x 18" Pair 1" x 3/8" x 18" Tile Cutters For quick and accurate production of tiles by pressing in a slab of clay. Simple ejection by pressing the sprung rod mm (1/8") square cutter mm (41/4") square cutter mm (31/4") hexagon cutter mm x 50 mm rectangular cutter mm square cutter mm round cutter Mini leaf cutters Mini round cutters Rubber Kidney Palettes For smoothing plastic clay surfaces, in press moulding and as a squeegee x 55 x 6mm x 57 x 6 mm x 64 x 8 mm Steel Palettes Ideal for smooth and trimming leather-hard clay and plaster and the serrated palette for rapid shaping or texturing of leather hard clay. Two thicknesses: Very flexible and Flexible, respectively VF and F x 45 mm Kidney (VF & F) x 45 mm Kidney (VF & F) x 51 mm Rectangular (VF & F) x 45 mm Serrated Kidney (F) DISCONTINUED Throwing Ribs Angle-Curve 10cm Stick with hook 30cm Convex-Oval 11cm Flat-Concave 10cm Flat-Rectangle 10cm Flat-Curve 8cm Flat-curve 14cm Large Throwing Rib 5827 Klay Gun An extremely useful tool for forcing soft clay through various shaped openings in an assortment of interchangeable disc dies. The extruded clay shapes can be used for an almost limitless number of decorative effects such as hair, grass, flower stems, ropes, logs, bricks, vines and decorative edges and mouldings. The Klay gun is furnished with a set of 19 discs that are formed to allow flush cut off of the extruded clay. It is constructed of sturdy die-cast zinc alloy and is simple to use and clean Glaze Hydrometer Floats in glaze like a fishing float. Invaluable to enable easy repetition of optimum glaze consistency from one batch to another. Sponges Small, Natural, Fine Texture Medium, Natural, Fine Texture Medium, Natural, Coarse Texture Medium, Synthetic, Fine Texture Large Synthetic Bench Sponge Sponge on stick (small) Sponge on stick (large) 5829 Tool Kit (not shown) Contains sponge, throwing rib, strip tool, double ended wire tool, heavy duty needle, wooden knife, steel kidney, stainless steel wire cutter. Attractively packaged. 38

41 Modelling Tools 5835 Printing Sticks A set of 15 wooden printing sticks, one end of each being shaped to give distinctive design (square, diamond, circles, ovals, etc.) when pressed into clay Mortar and Pestle Porcelain. For hand grinding raw materials and colour Slip Trailer Rounded bulb 115cc (4oz.) capacity having detachable nozzle with 1.6mm (1/16") hole Slip Trailer Plastic bulb 115cc (4oz.) capacity having detachable nozzle. Cut to hole size Djanting Needle A pen used for trailing slop glaze or decorative colour Abrasive Block Sintered Alumina. Useful for tool sharpening, cleaning used kiln shelves etc Glaze & Bisque Cutter Tungsten carbide coated steel rod in wood handle. 6" length. Ideal for widening holes in fired ware Sorting Tool 12mm hardend steel chisel edge for dressing kiln furniture and pots after firing. Cane Handles Prepared handles formed for immediate use " round " Square " round " Square " round " Square 5850 Dipping Tongs, 10" Dipping tongs are used to dip ceramic pieces directly into the glaze. They are made from heavy steel and feature four sharp gripping points that make minimal contact with the pieces being dipped. Calipers mm (8") mm (12") Cruet Stoppers Plastic, shallow collar To fit 7/16" dia. hole To fit 3/4" dia. hole. Wooden Taps " (sherry) small - medium Plastic Cruet Stoppers Still Available CORKS DISCONTINUED 5850 Sieves (Lawns) Strong, lightweight sieves with best quality stainless steel mesh and beechwood frame Mesh 203mm 254mm size (8" dia.) (l0"dia.) Cup Lawns Small lawns approx. 76 mm (3") dia. Ideal for sieving colours etc s mesh s mesh Slip Sieve Flat shape sieve for small quantities of slip or glaze. (Rotary Glaze Sieve see 7065) SECTION s Letter and Number Stamps for impressing into clay. Can be used for a wide variety of purposes: Particularly useful for marking clay/glaze trials, stamping a piece with the maker s initials, lettering on commemorative dishes etc. Made from alloy tool steel, hardened and tempered with a black finish and packed in a plastic box. Letter sets incorporate all 26 letters of the alphabet plus an ampersand (&). Number sets incorporate numbers W Wooden Calipers 17cm W Wooden Calipers Sliptrailer Bulb (60cc) Sliptrailer Bulb Set /4 letter /8 letter /4 number /8 number 39

42 Scales, Trolleys & Tongs Scales, Trolleys, Tongs Sack Truck Electronic Bench Scales Strong, stainless steel 275 x 310 mm platform. Digital indication. 20kg capacity x 10 gram. Builtin rechargeable battery pack & AC adaptor. Simple, one button operation Electronic Balance Weigh up to 200gm in 0.1gm increments Bin Dolley Put your clay bins on castors! Fits all standard bins and is an excellent aid for schools and studios. Weight 4kgs Ring dia. 381mm (15") Adjustable Bin Trolley Adjustable to fit all bins including ultra large galvanised type. 483mm (19") dia Electronic Balance Weigh up to 2kg in 1.0gm increments. Adhesive Felt Adhesive Circles 1" Dia Adhesive sheet 18" x 6" SECTION Electronic Balance Weigh up to 5kg in 2gm increments Triple Beam Balance Classic precision weighing instrument accurate to 0. 1gm. Complete with weight set (2 x 1000gm, 1 x 500gm) to give 2610gm weighing capacity School Balance (with weight set) Beam and base in die cast aluminium. Sensitive to 0.5gram with capacity of 2000 grams. Built in damping mechanism to reduce oscillation for speedy weighings. Durable and rust free. 8 piece brass weight set includes l x lgm, 2 x 2gm, 1 x 5gm, 2 x l0gm, 1 x 20gm and 1 x 50gm Gram Scales The perfect, inexpensive answer to weighing minute quantities of stains, oxides, etc. Weighs up to 50 gms in 1gm divisions. No weights necessary Folding Trolley A very inexpensive general purpose trolley which provides outstanding value for the safe and easy transport of bins, sacks and parcels. Hinged platform and retractable handle. Weight 4 kgs. (8.5 lbs.) Folded size 914 x 330 mm (36" x 13") Raku Tongs mm (36") Long x 203mm (8") jaws. Tubular steel handles, strip steel jaws mm (32") long x 205mm (8") open. Lightweight but strong alloy with hard steel gripping points mm (41") long x 228mm (9") open. Alloy without steel gripping points. Note: we feel that people should be sensibly attired when Raku firing using tongs. This includes leg protection and sensible shoes. Clock Movements and Thermometers 5875 Clock Movements Battery powered clock movement & hands. 4 designs Thermometer Kit An individual wallmounting thermometer can easily be made with this kit. Includes hands and calibration scale for thermometer face Spare Third Wheel Converts 5865 into a three-wheel trolley which is ideal for carrying bundles and mixed loads

43 Protective Clothing & Plasticware Protective Clothing Aprons Made in waterproof PVC on rayon cloth with cross-over ties at the shoulder and loops at the waist Apron Small ( suitable for children) 610 x 460 mm wide (24" long x 18") Apron Large 915 x 610 mm wide (36" long x 24") 6897 Teacher s Coat Raincoat style. In white terylene. Sizes 36", 38", 40", 42" and 44" Kevlar Mitt Heat resistant. Reversible: for either hand M MRC DISCONTINUED General Purpose Bowls The larger sizes are particularly suitable for dipping plates and flat ware Round Bowl 254 mm (10") die 6873 Round Bowl 355 x 20 mm deep (14" dia. x 4 3/4") 6877 Bin 72 litres (16 gallons) 16" dia. x 21" deep with twistlock lid and two handles. Holds 100kgs clay Bin dolley - See page 40 Buckets Complete with securely fitting lid and metal carrying handle, their design allows secure stacking to occupy minimum floor space. Useful for storing glaze and slip Bucket 9 litres (2 gallon) + lid Bucket 9 litres (2 gallon) no lid Bucket 13.5 litres (3 gallons) + lid Bin 23 litres (5 gallons) + lid Kevlar Gauntlet Mitt Reversible. 13" long M Respirator High efficiency respirator conforming to BS 2091 and all H & S requirements. inc. Raku. Complete with filter cartridge. Spare cartridges available ( RC) 6899 Safety Goggles Cone Viewer 6885 DISCONTINUED Storage Bottles Supplied complete with lids and useful for storage of glazes, colours and media cc. (2oz) capacity cc. (4oz) wide neck cc. (8oz) wide neck cc. (1 pint) wide neck litres (1 gallon) capacity. Measuring Jugs cc. (1 pint) cc. (2 pint) cc. (4 pint) SECTION Anti-Glare Safety Glasses DISCONTINUED Funnels mm (2.75") dia mm (6.25") dia DISCONTINUED LARGE SCOOP DISCONTINUED Scoops scoop area 150 x 100 mm (5.75" x 3.75"). 41

44 Plaster Moulds Plaster Moulds 6921 Tray Moulds 114 mm ( 4.5") Suitable for slip casting or pressing. Four different shapes are available: C Circular H Hexagon O Oval T Triangular Tray Moulds 229 mm (9") Suitable for slip casting or pressing. Four different shapes as with 6921 moulds C Circular H Hexagon O Oval T Triangular SECTION Planters Plant Pot Medium Traditional thrown shape. Slightly tapering sides T O C H Plant-pot Large Storage Jars Storage Jar Small 6" x 5.5" dia (152 x 140 mm) Storage Jar Medium 8.5" x 7.5"dia(211xl91mm) Storage Jar Large 10" x 8.5" dia (254 x 211 mm) Please Note: All dimensions are clay cast sizes T O C H

45 Plaster Moulds Casseroles 6968 Casserole-Stew Pot Complete with lid 254 x 140 mm high (10" dia x 5.5") 6977 Casserole high 184 x 140mm (7.25" dia by 5.5") with lid Casserole 102mm x 254mm dia (4" high x 10.5") Cups 6970 Tea Cup 83 x 115 mm (3.25" x 4.5") 6971 Saucer 133 mm die (5.75") 6595 Coffee Cup 82x114 mm (3.25"x4.5") 6966 Saucer 146 mm dia. (5.75") Teacup with Handle Beaker with Handle DISCONTINUED DISCONTINUED DISCONTINUED Wine Carafe 280 x 153 mm dia (11" high x 6") Plates 6986 Large Plate 292 mm dia (11.5") 6987 Oval Dish 356 x 254 mm (14" x 10") 6988 Medium Plate 165 mm (6.5" dia) Plate 7 in Plate 8 in Plate 10 in Tankards /2 pint Tankard 102 x 89 mm dia (4" high x 3.5") pint Tankard 127 x 121 mm dia (5" high x 4.75") Teapots 6973 New Tea Pot 203 x 292 mm long (8" high x 11.5") Bowls 6975 Bowl 121 x 76 mm deep (4.75" dia. x 3") Sugar Bowl 6976 Lidded bowl 127 x 95 mm high (5" dia x 3.75") Miscellaneous 6993 Egg Cup (2 per mould) 57 x 57 mm high (2.25" dia x 2.25") 6994 Chicken & Basket Two piece mould for each item (Total height 248 x 254 x 198 mm wide (9.75" x 10" long x 8") 6995 Salt and Pepper Shakers SECTION 6 Jugs Jug 82 x 121 mm deep (3.25" x 4.75") x 153 mm deep (4" wide x 6") Goblets-Wine Carafe Goblet 149 x 82 mm dia (5.75" x 3.25") Goblet Bulbous type 133 x 89 mm dia (5.25" x 3.5") & & See our website for details of our large range of quality bisqueware 43

46 Shimpo Potters Wheels Shimpo RK10 Shimpo wheels have a worldwide reputation for quality and reliability. The RK10 is superbly engineered and utilises a 0.25hp motor to power the wheel up to 240rpm but the traction drive system is such that the pulling power is equal to that of 0.5hp wheels, even at low speeds. Indeed, a particular feature is its low speed performance and easy control. It is notably quiet too; a fact much appreciated by production throwers. - Sealed belt-drive unit - Broad speed range allows optimum speed under all load conditions - Reversibility accommodates right and left-hand users - Compact design saves space - Wheelhead turns freely at zero rpm and serves as a banding wheel - Strong steel body - Two-piece splashpan is removable for easy cleaning - Rubber lined handgrips - Adjustable feet for stability on uneven floors - 12 month warranty Shimpo Whisper The Whisper represents the next generation of potter s wheels. Responsive and high torque at all speeds, powerful and quiet; This wheel is by far the quietest on the market. - Brushless DC motor: Smooth, quiet (30 decibels) powerful, no maintenance - Electronic Controller: Maintains desired speed under all load conditions - Broad Speed Range: Allows optimum speed under all load conditions - Reversibility: Accommodates right and left-hand users - Built-In Breaker: Motor protected from overload - Wheelhead: Turns Freely at 0 RPM - serves as a banding wheel - Two-Piece Splashpan - Two Year Warranty for Peace of mind W3D Whisper RK3D Fixed foot pedal with hand lever; Compact design saves space W3D SECTION 7 Motor: 0.25hp 186.4W AC 230V 50Hz Wheelhead Speed: 0-230rpm Wheelhead Direction: Clockwise/counter-clockwise Centring: 50kg (100lbs) Wheelhead: 300mm (12 ) dia. light alloy casting Dimensions: W 572 x L 630 x H 485mm (19 x 22.5 x 25 ) Weight: 35kg RK Lever Pedal Features foot pedal and hand lever and can be set to maintain any selected speed RK10 Remote Pedal This version has a remote control foot pedal which can be moved around to any convenient position and allows selected speeds to be maintained Motor: 1/2 HP 400W AC230V 50Hz single phase Drive System: Direct Drive DC Brushless Motor Speed Control: Fixed Foot Pedal with Hand Lever Wheelhead Speed: 0-250RPM Wheelhead Direction: Clockwise/counter Wheelhead: 300mm/12 light alloy casting Dimension: 525 x 582 x 515mm Ship weight: 45kg 7004-W3E Whisper RK3E Remote foot pedal (detachable) and telescopic legs (5 settings): All throwing positions accommodated. Three-leg design: Easy levelling and stability. Larger 14 wheelhead. Built-in worktable for tools and pots. Modular design for compact storage. Motor: 1/2 HP 400W AC230V 50Hz single phase Drive System: Direct Drive DC Brushless Motor Speed Control: Remote Foot Pedal Wheelhead Speed: 0-250RPM Wheelhead Direction: Clockwise/counter Wheelhead: 350mm/14 light alloy casting Dimension: 600 x 702 x 580mm Ship weight: 42.5kg 7004-W3E 7005-W3T Whisper T Economy version of the RK3E: Ideal as a first wheel and perfect for tight budgets. Please contact us for more information on our Shimpo Potters Wheels Motor: 300W AC230V 50Hz single phase Drive System: Direct Drive DC Brushless Motor Wheelhead Speed: 0-250RPM Speed Control: Remote Foot Pedal Wheelhead Direction: Clockwise/counter-clockwise Wheelhead: 300mm/12 light alloy casting Dimension: 750 x 572 x 580mm max. Ship weight 53kg 7004-W3T 44

47 7005-D Venco Direct Drive Potters Wheel 550W (3/4hp) direct drive permanent magnet motor ( V, 50/60hz) - smooth, high torque and maintenance free Intelligent computer based speed controller super smooth and powerful 0-300RPM speed range (forward and reverse) Easy-clean touch pad speed/direction control Wireless foot pedal allows greater flexibility by removing constraint of the electric cord running to the pedal. 330mm (13 ) corrosion resistant marine aluminium wheel-head Body and legs constructed from heavy duty brushed stainless steel May be used as a sit-down, stand-up or table top wheel Easy clean, diecast marine aluminium splash tray with labyrinth bearing protection Wheel structure and tray guaranteed for 10 years. Weight 25kg Shown L69xW51xH53cm (L23 xw19 xh21 ) with optional clip- on shelves CE certified Oxford Potters Wheel This wheel has been extensively developed to provide a wheel with unrivalled power and torque which is extremely quiet - probably the quietest of its type available on the market. The wheel is constructed using a quality steel chassis using sealed-for-life roller bearing, dynamically balanced drive pulleys and a high quality drive motor. It also incorporates one of the most sophisticated control systems available giving the wheel excellent response. The drive system is complemented by a remote foot pedal that will maintain pre-set speeds and is also makes the wheel very user-friendly. The body of the wheel is made of strong durable fibreglass and incorporates a moulded polypropylene splash tray with drain unit. It is supplied complete with a 12 wheelhead and fully adjustable padded seat. UK MADE Specifications Motor: 0.37kW (0.5hp) Bearings: Axial ball-bearing sealed for life. Bowl: Moulded polypropylene Wheelhead: 12 dia aluminium Construction: Electrical welded steel chassis with moulded fibreglass body Speed range: 0 to 280rpm with reverse capability Dimensions: W 530 mm x L 1060 mm x H 685 mm approx. Weight: 46kg approx. Centering weight: 20kg of clay Fitzwilliam Potters Wheel The Fitzwilliam Potters Wheel, designed by Mervyn Fitzwilliam, has been described as the Rolls Royce of potters wheels. The 0.5hp motor is controlled electronically. The precise speed control is operated using a simple foot pedal which has a return mechanism built into it and operates in a similar way to a car acceleration pedal. The wheel is also fitted with a removable tray and reversing switch Talisman 2 Potters Wheel A well designed and constructed wheel, suitable for the professional studio potter and educational establishments. The wheel is extremely robustly built with a durable powder coated sheet steel construction and incorporates heavy duty sealed-for-life bearings. It is driven by an electronic variable speed motor which gives excellent speed and torque response and also makes the wheel very quiet and smooth to operate. The wheel is complete with a 12 fully reversible aluminium wheelhead, an adjustable foot pedal and a large height adjustable padded seat. Specifications Motor: 0.5hp variable speed Bearings: Axial ball bearing sealed for life. Bowl: Moulded plastic Wheelhead: 12 dia aluminium Construction: Sheet steel construction electrically welded Speed range: 0 to 300rpm with reverse capability Dimensions: W 690 mm x L 920 mm x H 785 mm approx. Weight: 70kg approx. Centering weight: 25kg of clay 7011 Artisan Potters Wheel The Artisan Wheel is built with attention to detail and construction and will provide long, trouble-free service for both the professional and amateur potter. It is constructed using a polished wooden cabinet complete with an integral shelf and a two-position adjustable upholstered seat. It incorporates a large, moulded plastic bowl. The drive mechanism is an extremely smooth drive which offers low noise and vibration whilst giving excellent torque response so enabling large amounts of clay to be thrown. Fully reversible wheelhead for the left handed thrower. Double sealed top bearing for extended life. UK MADE Momentum Potters Wheel The Momentum wheel is a return to the traditional design of the Potters Wheel. It is constructed from a fabricated steel frame and has been designed for easy use. The heavy steel flywheel is mounted on two long-life sealed bearings and is coated with an anti-slip coating to provide grip when touching the fly wheel. Specifications Dimensions: W 700 mm x L 1070 mm x H 900 mm Weight: 95kg approx. Optional extras: Motor Assist; Large Splash Bowl; Padded Seat Specifications Motor: 0.5Hp; Voltage 220V/240V; 5OHz single phase Speed: 0-280rpm Wheelhead: 12 fully reversible Splash Tray: Moulded plastic Options: Easy lift wheelhead and batts Dimensions: W 760 mm x L 1170 mm x H 920 mm approx. Weight (unpacked): 70kg approx. Centering weight: 25kg of clay 7015 Wheelbats Circular bats made from marine plywood for exceptional warp resistance. Attach to wheelhead using pad of clay, locating pins or batt retainer. Diameters available: 8, 9, 10, 11, 13, 15 (203, 229, 254, 279, 330, 381mm) Potters Wheels UK MADE UK MADE UK MADE SECTION Craftsman Wheel also available to special order. Please contact us for details Locating Pins also available SUPPORTING BRITISH INDUSTRY 45

48 Pugmills SECTION Pugmill 50mm Split Barrel with Safety Switch The 7039 is the same model as the but is fitted with an interlocked hopper safety switch. This switch together with its high torque motor makes the pug mill extremely easy to load as there is no safety grid in the hopper to impede the flow of clay. When the loading handle is raised the machine switches off and then on again when the loading handle is lowered. Specifications 100mm aluminium body; 50mm extrusion Split body to facilitate easy cleaning Individual Nylatron blades mounted on a hexagonal steel shaft Geared motor reduction drive - single or 3phase Safety switch and overload starter Output: kg per hour approx. Overall Size: W 280mm x L 800mm x H 470mm approx. Weight: 36.5kg approx Pugmill 50mm Split Barrel with Safety Grid This pugmill has been specifically designed for the studio and classroom environment - being both compact and lightweight makes them easily transportable. It is fitted with a hopper safety grid and thermal overload switch as standard. Specifications 100mm aluminium body; 50mm extrusion Split body to facilitate easy cleaning Individual Nylatron blades mounted on a hexagonal steel shaft Geared motor reduction drive - single or 3phase Safety grid and overload starter Output: kg per hour approx. Overall Size: W 280mm x L 800mm x H 470mm approx. Weight: 36.5kg approx mm Split Barrel with Safety Switch The is the larger version of the 7039 and has the same easy loading hopper fitted with the unique safety interlocked switch. This version has a 150mm barrel with a 75mm outlet and individual alloy blades. Specifications 150mm aluminium body; 75mm extrusion Split body to facilitate easy cleaning Individual aluminium blades mounted on a hexagonal steel shaft Geared motor reduction drive - single or 3phase Safety switch and overload starter Output: 360kg per hour approx Overall Size: W 280mm x L 800mm x H 500mm approx. Weight: 78kg approx. Optional Extra UK MADE stand for 7039 range Pugmill 75mm Split Barrel with Safety Grid The is the same compact design as the but has a larger 150mm barrel with a 75mm outlet. This pugmill has a greater out put and due to its larger hopper is easier to use than its smaller cousin. It is supplied as standard with a thermal overload switch. Specifications 150mm aluminium body; 75mm extrusion Split body to facilitate easy cleaning Individual aluminium blades mounted on a hexagonal steel shaft Geared motor reduction drive - single or 3phase Safety grid and overload starter Output: 300kg per hour approx. Overall Size: W 280mm x L 800mm x H 500mm approx. Weight: 78kg approx. UK MADE 7039 SUPPORTING BRITISH INDUSTRY 7046 Pugmill 75mm Split Barrel with Safety Switch The 7046 Pugmill has a 150mm split aluminium barrel to facilitate easy cleaning with a 75 mm outlet. The auger consists of individually mounted alloy blades mounted on a hexagonal shaft that can be altered in configuration so that a greater mixing action or a faster extrusion rate can be obtained. Drive is supplied from a high torque helical drive gear box and the pugmill is supplied complete with all its necessary switch gear. Specifications Drive: Construction: Output: Dimensions: Weight: 0.75kW (1.0hp) with helical reduction gear box All aluminium body 150 mm in diameter with a 75 mm outlet; fitted with alloy blades mounted on a hexagonal shaft with taper roller bearings; split body for easy cleaning. Thermal overload starter with safety interlocked switch 360kg per hour approx. W 310mm x L 1300mm x H 510mm approx. 71kg approx Vertical Pugmill 75mm Split Barrel with Safety Switch The Vertical Pugmill has a 150mm split aluminium barrel with a 75mm outlet with individual alloy blades mounted on a hexagonal shaft. This pugmill offers superior performance over conventional horizontal pugmills but has the advantage of only having a 60cm x 60cm foot print so it takes up very little room in the studio. The pugmill is sturdily mounted on its own stand which only requires securing to a suitable floor. Specifications Drive: Construction: Output: Dimensions: Weight: 0.75kW (1hp) with helical reduction gearbox All aluminium body 150 mm in diameter with a 75 mm outlet; fitted with alloy blades mounted on a hexagonal shaft with taper roller bearings; split body for easy cleaning; thermal over load starter with safety interlocked switch 360kg per hour approx. W 609mm x D 711mm x H 1980mm approx. 123kg approx Vertical Pugmill 100mm Split Barrel with Safety Switch The Vertical Pugmill is an extremely powerful and robust extruder with the capacity to handle all types of clays. It has a split aluminium barrel and 100mm outlet with individual alloy blades mounted on a hexagonal shaft. Blade configuration can be altered to suit different types of clay if necessary. The pugmill is sturdily mounted on its own stand which only requires securing to a suitable floor. Supplied with separate nose cone which is pre-drilled to facilitate the fitting of different die plates for coil-building etc. Specifications Drive: Construction: Output: Dimensions: Weight: kW (1.5hp) with helical reduction gearbox All aluminium body with a 100mm outlet; fitted with alloy blades mounted on a hexagonal shaft with taper roller bearings; split body for easy cleaning; thermal over load starter with safety interlocked switch 700kg per hour approx. W 760mm x D 760mm x H 2300mm approx. 300kg approx. NOTE Stands and die plates available for all horizontal pugmills shown on this page. Please specify pugmill product code when ordering stands or dies. Choice of three multiple-hole die plates: 6mm, 10mm and 12mm dia. circular apertures. UK MADE UK MADE 46

49 Pugmills Shimpo NRA and NVA Pugmills NRA (Non De-airing) Dimensions: 665 (1025 inc. roller shelf) x 335 x 560mm Weight: 75kg Screw Revolution: 19rpm/50Hz Motor: 200W single phase 230V Extruding Capacity: 400kg/hr Structure: Twin auger design Screw material: Stainless Steel Screw case material: Stainless Steel Extruding Diameter: 90mm NVA (De-airing) Dimensions: 920 (1320 inc. clay roller shelf) x 420 x 750mm Weight: Main Body 140kg Clay Roller Stand 5kg Main Motor: 400W single phase 230V Vacuum Pump Motor: 200W single phase 230V Extruding Capacity: 200kg/hr Structure: Twin auger design Extruding Diameter: 90mm Venco De-airing Pugmills Worldwide reputation for performance and reliability. De-airing pugmills for the larger studio, college or semi-industrial user. Stainless steel auger with marine grade aluminium barrel, stainless steel mesh style shredder screen and stainless steel fasteners used throughout. 3 year warranty. CE certified Venco SUPER-twin The SUPER-twin is the most recent pugmill design from Venco. It was designed using a blank canvas approach incorporating totally new and innovative concepts. Venco have listened to user suggestions, resulting in a pugmill that is high quality, adaptable (one unit for mixing, recycling, de-airing, extruding) and incredibly easy to use and maintain, yet at an affordable price. All stainless steel construction. SUPER-twin BASE UNIT Suitable for mixing/blending both dry and wet scrap. Comes standard with 80mm (3.1 ) nozzle Non de-air 500kg/hr (1100lb/hr) Blend dry scrap with multiple passes - just cut pug into 100mm (4 ) logs and re-feed. Blends/recycles approx 120kg/hr (250lb/hr) Barrel diameter: 125mm (5 ) Motor 370W (1/2hp) L x W x H (crated with nozzle removed) 118 x 45 x 65cm (47 x18 x25 ) OPTIONAL MODULES for SUPER-twin A SUPER-twin DE-AIR MODULE Clip-on kit for up-grading the base unit to an efficient de-airing pugmill Super-twin de-air capacity 400kg/hr (880lb/hr) Tool-free upgrade takes only minutes 300W (0.4hp) vacuum pump with dirt/water trap Includes stainless mesh style shredder screen for high efficiency Clip-on vacuum chamber is easily removed for quick cleaning Comes standard with vacuum dump valve B SUPER-twin EXTRUSION MODULE 5 piece extrusion kit Clip-on die holder replaces the standard conical nozzle. Supplied with: two pre-made stainless dies 50mm (2 ) round, 80x12mm(3 x1/2 ) tile die two blank plexi-glass dies for user customisation C SUPER-twin EXPANSION CHAMBER MODULE For increased extrusion capacity 150mm (6 ) diameter clip-on expansion chamber replaces standard nozzle All stainless steel construction Strong flanged end for clamping/bolting wooded die plates Can extrude sections up to 125mm (5 ) width base unit mm (3 ) De-airing Pugmill 5mm (3 ) nozzle diameter 136mm (5 1/3 ) barrel diameter Hopper opening: 115x100mm (4 1/2 x 4 ) 180kg/hour (400lb/hr) output 370W (1/2hp) fan cooled single phase motor with overload protection 300W (0.4hp) vane style vacuum pump L143xW34xH37cm (56 x13 x15 ) crated not including pump 80kg (176lb) SECTION mm (4 ) De-airing Pugmill 100mm (4 ) nozzle diameter, 200mm (8 ) barrel diameter Hopper opening 200x175mm (8x 6.9 ) 550 kg/hour (1200lb/hr) output 1500W (2 hp) fan cooled single phase motor with overload protection 550W (3/4hp) belt driven vacuum pump L161 x W 35 x H 59cm(63x14x23 ) - crated and not including vac pump D SUPER-twin ROLLER RAMP MODULE (fits all Venco pugmills) Roller bed for supporting extrusion Integrated cutting bow All stainless steel with plastic rollers Adjustable roller height for all pugmills from mm ( ) Roller bed LxW 350x140mm (13 x5 ) 47

50 Slabrollers & Extruders Slabrollers These slabrollers have been designed to provide an extremely efficient and reliable method of producing slabs of clay for hand building or producing tiles. They have been designed using experience in slabroller production and incorporate a rack and pinion drive system eliminating the need for maintenance from troublesome wire driven systems. The design allows for infinitely variable thickness of clay to be rolled by means of adjustment of the main roller using a simple threaded adjuster that allows for fine accurate adjustment whilst keeping equal distance above the table across its length. The large single roller is made of a rust-proof material to avoid corrosion or contamination of the clay. Featuring fully collapsible legs for easy transportation and supplied complete with a set of high quality rolling cloths. Additional cloths can be purchased separately and there are also optional hard wheel designs available " long x 20" wide " long x 00" wide " long x 20" wide Slabroller Dimensions: W 820mm x L 920mm x H 1090mm approx. Slab size: W 470mm x L 720mm approx. Weight: 60kg approx Bench Slabroller Dimensions: W 820mm x L 920mm x H 470mm approx. Slab size: W 470mm x L 720mm approx. Weight: 55kg approx Slabroller Dimensions: W 820mm x L 1220mm x H 1090mm approx. Slab size: W 470mm x L 1020mm approx. Weight: 70kg approx. North Star Slabrollers Excellently engineered with machine cut, knurled rollers that really grip the cloths and geared drive for easy rolling. Solidly built, reliable workhorses that are nicely finished. Supplied with both crank and wagon wheel handles, cloths etc. Available in 3 sizes: " Slabroller Max. slab width approx. 610mm (24") " Slabroller. Max. slab approx. 762mm (30") " Slabroller. Max. slab approx. 914mm (36") Slabroller dimensions indicate approx. max. slab width Talisman Extruder Designed for wall mounting, this easy to use extruder is a useful item in every pottery studio for the production of coils or shaped strips of clay. Ruggedly made in steel with strong alloy wall mounting bracket. The 75mm (3") dia. steel barrel has quick release catches for easy die fitment. A blank die is included which can easily be drilled and shaped to any design and then quickly fitted to the machine /4" Die /2" Die Blank Die SECTION North Star Extruder Stainless construction. Robust. Slide-on extension arms. Easy dies change. Large set of dies included to make solid extrusions or various tube shapes. A tool for the professional. 48

51 Wad Box, Mixers & Blungers 7059 Wad Box Widely used for the extrusion of clay coils to produce coiled pottery.supplied complete with a die plate (7059-3) to provide nine coils at a time, each.5" diameter. With the screw feeder wound back, the barrel can be charged with plastic clay which is forced through the die plate in the base of the wad box when pressure is applied via the screw feeder. The machine is ruggedly made in steel but with a 4" dia. toughened plastic barrel to avoid rusting. It should be bolted either to a bench or on the special stand. Spare Dies mm (.25") holes mm (.38") holes mm (.5") holes Wad Box Stand A robust, stable, steel stand specially designed and drilled to take the wad box Gallon Mixer Supplied complete with heavy duty plastic tub. An invaluable aid for the rapid mixing of glazes and slips. Best results are obtained if the necessary quantity of water is first placed into the container and the material to be mixed is then progressively added whilst the machine is operating. The machine has a 0.25hp motor driving a stainless steel shaft and vaned aluminium impeller which is shrouded to prevent a vortex or splashing. A fitted handle makes lifting from one tub to another a simple operation Blungers Blunging is the process by which raw lump, powdered or plastic clay is mixed with water and reduced to slip for casting or decoration. This electrically driven blunger has been specially designed for this purpose. It utilises two stainless steel paddles which rotate at approximately 150rpm on a stainless steel drive shaft which is driven by a 0.37kW motor through a reduction gearbox. The hexagonal container is made from fibreglass and is fitted with an extended loading chute to avoid contact with the blades. The slip is run off through a valve at the base of the container. A stand can be supplied as an optional extra Blunger (15 gallon) Specifications Motor and Gearbox: 0.37kW Dimensions: W 700mm x D 700mm x H 850mm approx. Weight: 41kg approx. Capacity: 15 gallons Blunger (25 gallon) Specifications Motor and Gearbox: 0.37kW Dimensions: W 800mm x D 1000mm x H 1100mm approx. Weight: 60kg approx. Capacity: 25 gallons. SECTION Gallon Mixer with Stand As per specification but features an integral free-standing frame which straddles the bucket. This makes it more stable and also permits a variety of container sizes to be used Note Blungers can also be supplied to special order up to 300 gallon capacity to customers requirements with tanks of mild steel, stainless steel or polypropylene. Please ask for details. 49

52 Sifter, Sieve, Jar Mills & Damp Storage Cabinets 7064 Vibratory Sifter Ideal for rapidly sieving small quantities of slip or glaze. Supplied complete with easily removable 8" diameter 80s mesh sieve (or alternative mesh if requested) and strong four gallon tub. The power rating of the sifter is less than that of a 100 watt bulb and hence it will operate from any domestic mains outlet Jar Mills These Jar Mills are used to grind ceramic materials in porcelain jars of varying capacity. The rollers are mounted on self aligning bearings which can be easily moved to accommodate different size jars Jar Mill (Single) Overall Size: W 510mm x L 600mm x H 540mm approx. Weight: 50g approx. Maximum Capacity: Will accommodate 1 x one gallon jar (4.5 litres) Electrical supply: 220/240V single phase; 380/440V 3phase. Motor: Powered by 1/3hp electric motor which drives a rubber covered roller with one idler roller. IP55 Seated motor complete with thermal overload protection. Optional extras: Variable speed control, duration timers, flame proof motors for hazardous environments Jar Mill (Double) Overall Size: W 510mm x L 1020mm x H 490mm approx. Weight: 50g approx. Maximum Capacity: Will accommodate 2 x one gallon jar (2 x 4.5 litres) Electrical supply: 220/240V single phase; 380/440V 3phase. Motor: Powered by 1/3hp electric motor which drives a rubber covered roller with one idler roller. IP55 Seated motor complete with thermal overload protection. Optional extras: Variable speed control, duration timers, flame proof motors for hazardous environments. Jars cc (2 pint) jar cc (4 pint) jar cc (1 gallon) jar Damp Storage Cabinet Constructed from sheet steel with rubber door seals to maintain a moist atmosphere, this unit is designed for storing clay ware in the moist state. The base can be lined with damp plaster batts when a more moist atmosphere is required. Supplied with four adjustable steel shelves. Additional shelves are available if required. Spray finished in grey or blue Shallow W36xH48xD Deep W36xH48xD24 SECTION Rotary Sieve A new device enabling rapid sieving of slips, glazes or raw materials. Consists of a tapered spun aluminium body housing brush assembly and handle to rotate brushes over a screen. Brushes replaceable and screen quickly removable. Exceptionally easy to clean and different sieves fitted in seconds. Fits onto any round container and holds two gallons of material to be sieved. Excellent for sieving dry materials also (e.g. dry ash can be put through screen as fine as 100s). Supplied complete with one each: 60s,80s and 100s sieves. Dimensions Bowl dia. 16" x 5.5" deep Frame length 24.5". Screen dia.7.5" Spare Sieves s mesh s mesh s mesh s mesh s mesh s mesh 7065 Grinding Medium The optimum weight of medium required for efficient grinding is 2 Ibs. per pint of jar capacity. 0.5" medium is generally used but 0.75" for grinding coarse materials and frits. A mixture of 2:1 respectively is commonly used for rapid grinding mm (1/2") diameter medium mm (3/4") diameter medium 50

53 Drying Cabinets, Casting Unit, Slip Pump & Sedimentation Tank Drying Cabinets These drying cabinets have been specifically designed to aid the drying of plaster moulds and clay ware. The unit consists of a fabricated zinc coated steel cabinet with two vertical hinged front opening doors which give unrestricted access to the four removable open mesh shelves. The heater unit is a 2kW ceramic heating element which is thermostatically controlled. The unit is suitable for operation from a standard 12 amp single phase supply and is complete with an on/off temperature control switch Drying Cabinet (Narrow) Dimensions: W 45 x D 23 x H 48 approx. Weight: 55kg approx. Electricity supply: 2kW; 220/240V single phase; 50 Hz Drying Cabinet (Wide) Dimensions: W 72 x D 23 x H 48 approx. Weight: 80kg approx. Electricity supply: 3kW; 220/240V single phase; 50 Hz Slip Pump This Slip Pump has been designed as a highly versatile method of slip casting both for studio and hobby ceramics. The pump uses a rotary vaned design capable of giving a good even flow. The pump also has an agitating effect on the slip keeping the slip in a usable condition for short periods of time and can also drain moulds by the use of a siphoning action Pump & Frame: Manufactured from stainless steel and aluminium providing a rust resisting pump unit. Mobile Container Capacity: 10 gallons Motor & Switch: Single phase 1/2hp 220/240V. Both switch and motor are IP55 rated enabling them to be used in complete safety in the slip casting environment Gun/Hose: A specifically designed professional slip gun attached to a 3/4 bore PVC hose. Pump dimensions: W 300mm x D 300 mm x H 800mm. Weight: 14.5kg Slip Casting Unit The features the mounted in a self-contained fibreglass tank with removable wooden casting rails. The tank is mounted on castor wheels and is fitted with bottom drain plug for emptying and cleaning. Capacity: 15 gallons approx. Overall size: W 530mm x D 1040mm x H 1140mm approx. Weight: 22kg approx Sedimentation Tank Helps protect our environment and prevent blocking of drains with clay or plaster residues. Collects sediment but allows water to continue to drains. Easily fitted under sink and to waste system. Portable: wheel away for emptying. Simple but effective. Size 620 x 420 x 530 mm high. SECTION 7 51

54 Spray Booths & Equipment 7080 Spraybooth & Stand The 7080 Spraybooth has been designed for use in the classroom or small pottery workshop. The booth is fitted with a 12 electric extractor fan which produces an air velocity of 250cfm at the face. A washable heavy duty filter is fitted as standard. Dimensions: Stand: Power supply: Weight: W 610mm x D 750mm x H 610mm approx. W 610mm x D 450mm x H 900mm approx. 220/240V single phase 21kg approx. Only suitable for water based material Please note: This spraybooth is designed to be ducted to atmosphere through ducting that meets your local government requirements. Please take these requirements into account when ordering this product. If you have any queries please do not hesitate to contact our technical department who will be only too pleased to advise you Spare Filter Cartridge 610x60x51mm (24x18x2 ) Ducting Supplied by the metre. UK MADE Wet Back Spraybooth (large) The is a larger version of our popular model. This unit has a hood internal size of 1m x 1m and is equipped with a separate water tank that can be detached to aid cleaning. Specifications Size: Fan: Air extraction: Construction: Weight: Power: Hood internal Dimensions: Noise levels: H 1680mm x W 1200mm x D 1585mm approx. 2000cfm 250cf/min Internal parts stainless steel; polypropylene water tank/hood 180kg approx. 220/240V single phase; 50Hz water wash; 16 amps 1000mm x1000mm x 585mm deep. Working depth 500mm. 85 to 90 dba approx. Switchgear and thermal overload protection Only suitable for water based material Please note that under heavy use we advise that the booth is extracted to atmosphere. UK MADE SECTION Wet Back Spraybooth This water-wash spraybooth has been designed to meet the ever increasing need to protect our environment. This type of spraybooth works on the principle of a curtain of continuous recycling water running down the rear face of the booth. A glaze spray is aimed towards this curtain, the spray being guided by a powerful extraction fan. The glaze is trapped by the water curtain, whilst the air stream is pulled through the booth and into a washable stainless steel pre-filter and finally into a washable filter bag. The excess glaze is washed into the tank and can at a later date be reclaimed depending on the type and colour of the glaze. There is a ball valve to allow the water to be drained and the contents of the tank removed. Any glaze materials can also be removed and disposed of safely. The booth is mounted on four castor wheels. This version is primarily designed to be used by the studio potter and educational faculties for low volume production, therefore the booth does not need ducting to atmosphere, making it portable around the studio environment. Size: H 1655mm x W 720mm x D 1290mm approx. Fan: 2000cfm Air extraction: 250cf/min Construction: Steel construction; internal parts stainless steel; polypropylene water tank Weight: 118kg approx. Power: 220/240V single phase; 50Hz water wash; 16 amps Hood internal dimensions: 638mm x 625mm x 420mm deep. Working depth 350mm Our spraybooths are only suitable for water based material. Please note that under heavy use we advise that the booth is extracted to atmosphere Spray Kit A superb, piston-type, high pressure, oil free air compressor and spray-gun kit. Complete with air outlet regulator & gauge, built-in carry handle, pressure-fed spray gun and air hose. 33.5cfm air displacement Max. working pressure 8 bar (115psi) 0.5hp, 230V motor UK MADE SUPPORTING BRITISH INDUSTRY Switchgear and thermal overload protection If you are looking for a piece of equipment or machinery that isn t shown in our catalogue, please contact us and we will try our best to source it for you. UK MADE

55 Potclays Kilns GK & EP Ranges SECTION 8 Etruscan Range Silver Range 53

56 SECTION 8 Potclays Etruscan Kilns Potclays kilns are supplied to meet a variety of applications. These include glass work, heat treatment of metals, metal enamelling and lost wax processing in addition to ceramics use. A large number of our kilns are specially made to clients' specification, designed to operate from different voltages, or specially built to suit site conditions. Kilns can be built in two sections, for example, to pass through narrow doorways etc., and then bolted together on site. If you therefore require a kiln of different size, or one to meet a particular need, please ask us for a quotation. Similarly, please contact us if you need advice to enable you to select the most appropriate kiln or accessories, or about siting or positioning, installation, venting or operation. Advice will be given gladly, without obligation. Ordering 1) Please state voltage and phase of electricity supply. Where this is not given we will assume it is normal UK single phase voltage (230 volts) with neutral. It is important to check the voltage and available power where the kiln is to be positioned. Ask your electrician or Electricity Board if in doubt. 2) Check that the kiln will pass through all doorways and other restrictions and that the access route is flat and firm. Steps and slopes can be a particular problem. Where site conditions are difficult please consult us. For example we can, at extra charge, build front loaders in 'split cabinet form for easy assembly on site. Note that L&L and the larger Silver top loading kilns are of sectional construction to enable them to pass through narrow doorways, up flights of steps etc. Guarantee and Maintenance Limited 3 year warranty on all component parts except elements. Full after-sale service. Maintenance contracts available throughout mainland UK. Delivery Many of our top loading kilns are collected in 'hatchback' cars etc but others - and most front loading kilns - are generally consigned by special vehicle. Delivery is normally by lorry or by special van fitted with a tail lift facility. Help is needed either with offloading or in assisting our driver. With assistance kilns can be moved into final position. Delivery is charged extra dependant on distance, kiln size and site conditions. We can take care of everything but delivery arrangements must be discussed with us and agreed at time of ordering. Installation Kilns smaller than 3.1kW can be plugged into a 3 pin 230 volt power socket. Larger kilns have to be wired into the supply through an isolator or switch fuse unit (e.g. cooker point). Kilns of internal height 68.6mm (27 ) and also the SK43 can be connected to either a single phase or a three phase & neutral supply. For large kilns, a 3-phase power supply is generally preferable. Connection to either supply is simple for a competent electrician. If in any doubt, contact us. Etruscan top loading studio electric kilns - Great Value! Top quality elements Fitted with electronic controller Kiln stand included Furniture set & batt wash included Compact, easy to operate and reliable kilns that range from the 1314 and 1418L models operating from a 13amp power socket to the 1418HT and 1818 models which can be wired to a cooker circuit. Comes fitted with an automatic firing controller (see page 62), either a) Hobbymaster 4 or b) Firemaster 5 Etruscan 1314 All Etruscan kilns are manufactured by Potclays with a strong, polished stainless steel frame, 75mm of high temperature refractory brickwork, a brick lid and reversible base disc. Kiln Max Capacity Dimensions (dia x height) weight electrical Internal External o C 31 litres 337 x 343mm 470 x 597mm 33kgs 3.1kW (1.1ft 3 ) (13.25 x 13.5 ) (18.5 x 23.5 ) 13amps 1418L 1300 o C 44 litres 349 x 457mm 508 x 762mm 40kgs 3.1kW (1.6ft 3 ) (13.75 x 18 ) (20 x 30 ) 13amps 1418HT 1150 o C 44 litres 349 x 457mm 508 x 762mm 40kgs 3.8kW (1.6ft 3 ) (13.75 x 18 ) (20 x 30 ) 16amps o C 74 litres 451 x 457mm 610 x 762mm 52kgs 6.2kW (2.6ft 3 ) (17.75 x 18 ) (24 x 30 ) 26amps 54

57 Silver top-loading electric kilns Manufactured by Potclays Sandwich wall construction comprising 75mm brick thickness inside 5mm of ceramic paper, housed in an extra-thick, mirror-finished stainless steel case. Vent plugs in sides and lid. Separate reversible base. Stand with castor wheels. Lid operated safety switch and element power-on lights fitted into switchbox for good diagnostics. Lifting handles fitted. Top quality thermocouple and Kanthal elements fitted. A separate wall mounting control box houses a Firemaster 5 (or alternatives, see page 60) temperature controller; a second wall box houses energy regulators controlling separate zones of the kiln; power-on light, zone energy regulator cycling lights; contactor(s) and accessory circuit fuse(s). Both wall boxes are ready wired to the kiln and only require mounting to a wall. Strongly constructed for long life and low maintenance. The extra ceramic paper and the separate wall mounting control box are major features of Silver kilns. The 5mm paper keeps the kiln cooler and the wall boxes allow all important electrical components to work in a cooler environment to ensures good reliability. They are also more convenient to use and reduce installation costs since the power cable to the kiln is already fitted. An optional zone controller is available for very even heat distribution at all temperatures. This uses a separate thermocouple in each zone. S43 & S65 Silver Kilns (with 3 regulator option) Potclays Silver Kilns Instrument Options: Please refer to page 62 for detailed descriptions of the following controllers. Hobbymaster 3 An old favourite. Memory stores a single userdefined 2-ramp firing cycle with delayed start and timed final soak. Lockable keypad. NEW Hobbymaster 4 Can be switched between different operational modes for ceramics, glass etc. Up to 6 user defined programs, each with up to 8 heating/cooling ramps, 8 target temperatures and 8 hold periods. Delayed start. Separate output for safety relay. NEW Firemaster 5 9 user defined programs each with 1 to 9 segments, each segment having two heating/cooling ramps followed by a timed soak. Delayed start, step skip, lockable keypad, energy recording, event output, safety relay output, power failure recovery. NEW Zonemaster Maintains separate control of up to 3 zones for maximum uniformity of temperature throughout the kiln. See page 60 for more details. Silver Kiln Construction: S26, S39 and S43 kilns have one-piece body construction. S65 and S105 kilns have two-piece body construction. The S65 alternatively can be supplied as one piece body construction. KILN DETAILS Electrical Details Kiln. Max. Dimensions Weight Power Volts- Energy No. of Furniture No. rec. Rating Amps Regs. Elements Batt size Set* temp. Capacity Dia. x Height Dia. x Height Kg kw (round) (Extra) S o C 74 litres 451 x 457mm 781 x 762mm x 15mm 3 batts 2.6ft x x x props S o C 110 litres 451 x 686mm 781 x 965mm x 15mm 4 batts 3.9ft x x x props S o C 122 litres 584 x 457mm 933 x 762mm x 19mm 3 batts 4.3ft 3 23 x x x props S o C 184 litres 584 x 686mm 933 x 965mm x 19mm 4 batts 6.5ft 3 23 x x x props S o C 300 litres 737 x 686mm 1067 x 965mm x 25mm 8 x 1 /2 batts 10.5ft 3 29 x x x 1 + props S o C As above As above As above / As above 12 As above As above SECTION 8 55

58 L&L Kilns Potclays are the exclusive importers to the British Isles for L&L Kilns who are one of the leading builders of craft and industrial kilns in the USA. The scale of their top loader operation enables high quality kilns at competitive prices and the present currency exchange rate ensures their unbeatable value. 13amp Plug and Go kilns Robust construction Hardened element holders Quick release electrics housing for easy access for maintenance Versatile 3 button controller. Reversible base Stand ready for kiln vent attachment. EasyFire Range E28S For even easier access to contactors etc. the EasyFire range have a hinge-down outer switch housing as well as a quick release inner housing. Spring assistance to help lid raising. Hardened element holders. See the next page for full details of these Frontloading Kilns The hardened clay element holders are a major feature of all the L&L kilns we sell. They protect delicate brickwork and improve heat transmision. Patented by L&L they are exclusive to L&L. Other features of all L&L kilns are:- Designed for easy maintenance; high specification controllers; reversible base to extend life if damaged by glaze etc; sectional construction for easy transportation up steps and through narrow doors; 3 brick used in all kilns so for external diameters (minimum access doorway) add 150mm (6 ) to internal. Only 250mm access width needed if kiln sections are dismantled o C maximum temperature. At 40litres, one of the largest stoneware kilns available to run on 13amp supply. External diameter 52cm 1100 o C maximum temperature. At 70 litres, probably the largest kiln on the market for use from a 13amp socket. External diameter 58cm Multi-zone control to optimise temperature uniformity throughout the kiln. Dynatrol Control allows controlled cooling.and choice of ramp/setpoint programming or Easyfire one-touch cone selection. Delayed start and pre-heat Strong metal support across lid to reduce brick stress. E23T GK150 Kiln EP73 Kiln SECTION 8 L&L Internal Dimensions Cubic Kilo Temp Ship Wgt Model No. Name Voltage Phase Diam High Litres Feet Watts Amps Rating (KG) 80LLF Fuego 230 1ph 33cm (13 ) 45.7cm (18 ) C 100Kg 80R Robin 230 1ph 42cm (16.5 ) 45.7cm (18 ) C 100Kg 80LLE18S Easy Fire 18S 230 1ph 42cm (16.5 ) 45.7cm (18 ) C 100Kg 80LLE18T Easy Fire 18T 415/230 3 or 1ph 42cm (16.5 ) 68.6cm (27 ) / C 120Kg 80LLE23S Easy Fire 23S 230 1ph 57cm (22.5 ) 45.7cm (18 ) C 140Kg 80LLE23T Easy Fire 23T 415/230 3 or 1ph 57cm (22.5 ) 68.6cm (27 ) / C 150Kg 80LLE28S Easy Fire 28S 230 1ph 71cm (28 ) 45.7cm (18 ) C 170Kg 80LLE28T Easy Fire 28T 415/230 3 or 1ph 71cm (28 ) 68.6cm (27 ) / C 200Kg All Easyfire kilns are fitted with 2 or 3 zone 6 program, 9 segment Dynatrol Controller. Fuego and Robin have Bartlett 3K 4 program, 8 segment. Thermocouples protected by industrial quality thick ceramic protection tubes. See page 60 for details of venting systems. EP56 Kiln 56

59 Gold Series Gold front loading kilns are very durable, reliable and exceptionally efficient production kilns of high performance for school or industrial use. They are constructed from the latest high temperature insulation refractories comprising an ultra-efficient brick hot face and back-up insulation to give a 150mm thick wall of exceptionally low conductivity. This ensures extremely low heat loss, very low external temperatures and amazingly low firing costs. Elements, in highest grade Kanthal for long life and fast, economical performance up to 1300 o C, are fitted to both side walls and hearth. The robust angle iron framework featuring an integral stand houses ventilated sheet steel panels which are treated with corrosion resistant paints and very attractively finished in grey and black. One large spy hole is fitted as standard into the door (multiple holes to special order only) and a large vent in the roof. See page 60 for kiln ventilation and protective cages. EP Series EP kilns combine the great durability of the 'Gold' kiln design (and have the same robust angle iron construction and hot face brickwork) but using a 115mm wall thickness. This gives a lower capital cost and a quicker cooling rate: factors which will be appreciated in busy production situations. The kilns have been designed to be a cost effective package and incorporate a thermocouple and choice of Hobbymaster, Firemaster or Zonemaster (see page 60) temperature controller which is factory fitted. EP kilns can be seen to give a very good capacity/price ratio. Spy hole: see above Gold Series. The kilns are attractively spray finished in grey. *Furniture sets include a range of props. Potclays Gold & EP Kilns KILN DETAILS Electrical Details Furniture Kiln. Max. Firing Chamber Size Overall Size Weight Power Max. No. of No. rec. Rating Amps Elements Quantity Set* temp. Capacity Wide Deep High Wide Deep High Kg kw 230v 3ph per set Batt size Ref. No GK C 12 litres 229x229x229mm 457x533x597mm x203x13mm 8206GK4 0.4ft 3 9x9x9 18x21x23.5 8x8x0.5 GK o C 28 litres 305x305x343mm 559x673x686mm x292x19mm 8206GK10 1.0ft 3 12x12x x26.5x x11.5x.75 GK O C 62 litres 381x457x343mm 724x914x1524mm x432x19mm 8206GK22 2.2ft 3 15x18x x36x x17x.75 GK O C 82 litres 381x457x457mm 724x914x1549mm x432x19mm 8206GK29 2.9ft 3 15x18x x36x x17x.75 GK o C 122 litres 381x457x686mm 724x914x1619mm x362x22mm 8206GK43 4.3ft 3` 15x18x x36x x14.25x.75 GK o C 178 litres 457x508x750mm 800x965x1619mm x457x15mm 8206GK63 6.3ft 3 18x20x x38x x18x.625 GK o C 195 litres 508x559x686mm 826x1041x1575mm x254x19mm 8206GK69 6.9ft 3 20x22x x41x62 17x10x.75 GK o C 232 litres 457x508x978mm 800x965x1619mm x457x15mm 8206GK82 8.2ft 3 18x20x x38x x18x.75 GK o C 290 litres 457x635x978mm 800x965x1676mm x279x19mm 8206GK ft 3 18x25x x38x66 16x11x.75 GK o C 354 litres 610x762x762mm 953x1219x1797mm x279x19mm 8206GK ft 3 24x30x x48x x11x.75 GK o C 425 litres 610x762x914mm 953x1219x1797mm x279x19mm 8206GK ft 3 24x30x x48x x11x.75 GK o C 509 litres 610x914x914mm 953x1372x1797mm x279x19mm 8206GK ft 3 24x36x x54x x11x.75 GK o C 708 litres 686x914x1143mm 1029x1372x1981mm x318x25mm 8206GK ft 3 27x36x x54x78 17x12.5x1 KILN DETAILS Electrical Details Furniture Kiln. Max. Firing Chamber Size Overall Size Weight Power Max. No. of No. rec. Rating Amps Elements Quantity Set* temp. Capacity Wide Deep High Wide Deep High Kg kw 230v 3ph per set Batt size Ref. No EP o C 107 litres 457x495x457mm 724x914x1549mm x432x25mm 8206EP38 3.8ft 3 18x19.5x x36x61 17x17x1 EP o C 127 litres 457x546x572mm 724x965x1626mm x419x16mm 8206EP45 4.5ft 3 18x21.5x x38x64 18x16.5x0.625 EP o C 160 litres 457x495x686mm 724x914x1619mm x432x25mm 8206EP56 5.6ft 3 18x19.5x x36x x17x1 EP o C 206 litres 533x546x749mm 800x965x1619mm x508x25mm 8206EP73 7.3ft 3 21x21.5x x38x x20x1 EP o C 246 litres 533x648x686mm 800x1117x1651mm x317x25mm 8206EP87 8.7ft 3 21x25.5x x44x65 19x12.5x1 EP o C 270 litres 533x546x978mm 800x965x1619mm x508x25mm 8206EP95 9.5ft 3 21x21.5x x38x x20x1 EP o C 331 litres 533x673x978mm 800x965x1676mm x318x25mm 8206EP ft 3 21x26.5x x38x66 19x12.5x1 57 SECTION 8

60 Truck Kilns & Other Types Electrically operated truck kilns Truck kilns are more expensively constructed than other kiln types of similar capacity but their flexibility, economy and practicability uniquely suit them to the demands and needs of busy production units. A truck contained in the kiln can quickly be removed after firing and the kiln door closed to retain the residual heat. This permits the truck to be unloaded and reloaded with exceptional ease and without being exposed to the heat of the kiln. Alternatively a further truck, preloaded with ware, can quickly be placed into the kiln for firing after the fired truck has been removed and shunted to siding rails. The system is less obtrusive, more economical, more durable and more flexible than alternative systems. The trucks run on rails supplied with the kiln. The kiln is built of strong angle iron and steel panels housing 150mm of finest quality hot face bricks and fibre back-up insulation with harder bricks used on adjacent surfaces of the kiln and the trucks. Elements are located in the side -walls and in the kiln cars. The arched roof is fitted with a manual damper but automatic dampers and other features to meet clients' needs can be incorporated. The kilns are supplied from a minimum of 18ft, (510 litres) up to 100ft 3 (2832 litres). CH12-9 Chameleon Glass Kiln by L&L The Chameleon glass & hobby kiln is the new plug-in home kiln for glass artists and other fired arts enthusiasts. Suitable for fuse glass, rake glass, china paint, low-fire ceramic bisque and glaze, PMC precious metal, even heat treatment of knives and glass. L&L s unique hard ceramic element holders make it the first small square lid elemented glass kiln for home use for firings virtually free of dusting. A Bartlett controller gives four easily programmed firing schedules. Complete easy-to-follow visual instructions make this kiln ideal for the beginner yet powerful enough for experienced users. Specifications:- Temperature Limit 1100 o C (2200 o F) Interior 34.3 cm (13.5 ) square by 22.9 cm (9 ) High, Volume 26.6 liters (0.94 cubic feet) Exterior Size 48 cm (19 ) Wide by 55 cm (21.5 ) Deep by 51 cm (20 ) High Supply Volts, 1 phase. Power 2850 watts (13 Amps) at 220 volts, Kiln Weight 54.3 Kg (120 pounds), Shipping Weight 72.6 Kg (160 pounds), Shipping dimensions 94 cm (37 ) Square by 86cm (34 ) High Lost Wax Kilns by Potclays These kilns are specifically designed for dewaxing investment-cast items and feature a specially grooved hearth with a taphole leading to a removable tray to enable recovery of the wax and much increased element life. The standard versions have an energy regulator to control firing speed and an indicator to show temperature. At extra cost the kiln stand is a useful accessory, and a variety of optional computer controllers are available (see page 60). The two most popular sizes are shown on the right and in the table below but larger sizes can be made to special order. SECTION 8 58

61 'Thor' kilns - by Potclay Kilns Ltd. The Thor firing system utilises burners which fire vertically from the base up both side walls. Heat is therefore projected directly upwards to where it is needed without the use of deflection devices. This is more efficient and aids more even temperature distribution. Thor kilns are solidly built of HT1 & 26 grade brick with high quality back up insulation to give 6" (150mm) thick walls mounted in a very strong angle iron and steel cabinet. They have an arched roof and three spyholes in the door. Adjustable batts over the base flue direct combustion gases into the rear vertical flue which is fitted with a slide damper. All kilns have four naturally aspirating burners each fitted with flame failure devices. Flame viewing-cooling ports are fitted in both side walls. At extra cost, solenoid valves and automatic temperature controllers can be fitted. Gas Fired Kilns Raku Gas Kilns Operates from Propane gas. Complete with burner, regulator and kiln stand. Max temp these kilns have been tested to is approx 1050 C RG Kiln 1.2ft 3 17" x 9" firing chamber RG Kiln 2.4ft 3 24" x 9" firing chamber Extension rings RE 17" x 4.5" RE 24 " x 4.5" Laser Kilns A range of five front-loading down draft kilns of zinc plated sheet steel construction housing layered refractories with ceramic fibre as the hot face. The very lightweight low thermal mass structure gives very good economy and portability. Burners firing from the rear of the kiln are fitted with flame-failure and electronic spark ignition & can be supplied for Natural Gas or Propane. G Kilns have castor wheels and a side hinged door. 'J' kilns have adjustable feet and a centrepivoted door. Further details on application. Please Note: An extraction canopy and flue is needed with all gas kilns. See page 60. Thor Kiln Range Kiln. Firing Chamber External Dimensions Weight No. Capacity Wide Deep High Wide Deep High Kg Batt size NGK litres 610x635x838mm 978x965x1829mm x11.5 x ft 3 24x25x x38x72 NGK litres 660x648x838mm 978x1143x1854mm x11.5 x1 12.6ft 3 26x25.5x x45x73 NGK litres 711x686x838mm 1016x1067x1778mm x11 x1 14.2ft 3 28x27x33 40x42x70 NGK litres 806x686x914mm 1143x1168x1930mm x11 x1 17.9ft x27x36 45x46x76 NGK litres 813x914x914mm 1156x1448x2045mm x11 x1 23.8ft 3 32x36x x57x80.5 Gas Burner Kit By using our new gas burner kit pictured here you can easily and accurately control the temperature in your homemade raku kiln. Simply attach the burner to your kiln and the regulator connector to the gas container. SECTION 8 59

62 Kiln Accessories & Spares SECTION 8 Heat Fuse Available for C (usual) and 50 0 C increments below. 8132R Resettable. Operates from existing pyro. thermocouple. Panel mounting Change-over Switch Enables two kilns to be fired by one controller (but not simultaneously) 8135 Automatic Damper Motor driven unit which opens and closes the top vent at preset temperatures or time. Avoids having to manually insert vent plugs Spare Elements Please detail exact position in kiln and kiln model and serial number. We also manufacture elements for other kiln makes and would be pleased to quote. Ring our kiln department for details. Elements Sets The cheapest way of buying elements Kiln Furniture Sets See kiln section and pages 63 & 64. Kiln Spares All replacement components for most kilns can be supplied e.g. Kiln sitter tube assemblies Porcelain connector blocks HT1 kiln bricks (8225) K23 Kiln bricks (8225-2) Refractory Cement (8226) Kiln Vent Plugs (8228) Contactors and safety switches. Many other items - please contact us Kiln Guard These heavy duty cages are made to order and are used where young children or handicapped people may come into contact with hot kilns. Kiln/Room Ventilation We have various venting and air extraction systems for electric kilns dependant upon kiln type and requirements L&L Vent-Sure powered vent Designed to fit L&L kiln stands Room Ventilator Ideal for flat roof garages, sheds, etc. No power supply needed. Wind driven. Extracts fume etc. Easy to install Orton Kiln Vent For top loading kilns. An 18 x18 x9 high stand housing an air extraction unit onto which the kiln is placed. Air passes through small holes in the lid and base and is ducted to outside atmosphere Orton hood vent. A free standing vent unit that can extract air from two kilns and duct this to outside atmosphere. Extraction-Ventilation Canopies For removal of heat and noxious fumes from kiln firings. Leg design enables fitting to any front loading electric kiln. Stainless steel construction for smart appearance and long life. Takes 5 diameter flexible pipe attached to rear spigot and taken to outside atmosphere. Two standard sizes, others to special order. Galvanised steel available at lower cost long x 32 wide x 15 high (1070 x 810 x 380mm) long x 39 wide x 15 high (1420 x 990 x 380mm) See photo of canopy on page 54. Special kiln canopies with triple flued chimneys for cool outer surfaces are available for gas kilns. See following photos:- Examples of ventilation canopies Orton Cones The composition and structure of cones is such that they bend and deform when heated for a period of time. i.e.their performance depends upon heat work and not upon temperature only. They are graded according to the amount of heat they will withstand and are placed upright in holders in the kiln where they can be viewed from the spy hole. Orton cones are designed so that when their bases are placed level they lean at an angle of 8 0 and will bend in this direction when they have reached temperature. Since their deformation characteristics mirror the maturing characteristics of the ceramic products being fired, Orton cones are an outstanding method of indicating heat work carried out duringfiring. 60

63 Temperature Measurement & Control Using Cones It is usual to use a set of three consecutive cones: one to bend below the optimum firing point, one at the optimum firing point and one above. Single small cones are also used in Kiln Sitter controllers self-supporting cones are freestanding and do not need cone stands or clay mountings. They are stocked only in 016, 017, 06, 05, 04, 03, 02, 01, 6,7,8,9 and 10. Others can be specially ordered. After any firing cones cannot be reused. Whatever temperature indicator or controller is used to control a firing it is strongly recommended that Orton cones additionally be used since they monitor heat work rather than temperature. They reliably monitor the effect of heat on the ware load and also the heat balance in various areas of the kiln. Orton cones are of three types: 8200 Standard Size (2.5 high) 8201 Small Size (1 high) 8202 Self Supporting ORTON CONE No. Approx. bending temp. o C (Temp. equivalent) Heating rate o C per hour 60 o C 100 o C 150 o C * * * * Cones can be stood in pats of clay or held in special sockets: 8203-S Triple socket for 8200 cones 8203-M Triple socket for 8201 cones Cone viewer Anti-glare disc for viewing cones. Thermocouples 13% Platinum-Rhodium thermocouple (type R) complete with two metres compensating cable. For use with 8144 and 8145 temperature indicators and all temperature controllers. Thermocouple needs to be about 1.5 (approx. 4cm) longer than kiln wall thickness thermocouple suitable for Etruscan, Silver and all kilns with maximum 3.5 (89mm) wall thickness thermocouple for electric kilns with max. 4.5 wall thickness Suitable for kilns with ( mm) wall thickness (229mm) thermocouple Longer thermocouples available. Size required is wall or roof thickness plus 4-5cm. For use with gas fired kilns a thermocouple having a thicker sheath must be used. To order, add suffix G to the thermocouple reference. e.g G Compensating Cable Replicates the thermoelectric performance of the thermocouple up to a certain surround temperature, for an inexpensive way of connecting a thermocouple to a measuring instrument or controller. Length to requirement. Element Wire Top quality 1400 o C Kanthal wire for elements, formers, hangers. Available per metre in many diameters from 0.1mm to 2mm Element Winding Service We can manufacture elements at short notice and at a competitive price for all makes and types of electric kilns. Elements for kilns we supply are normally kept in stock. Maintenance Service Potclays has been building kilns for over a quarter of a century and their experienced team of engineers and builders also provide a quality advisory and maintenance service. They have the knowledge and skills to repair all makes & types of electric kilns under 100cu.ft and to update older equipment. Safety checks are made with written reports, and Service Contracts are undertaken for peace of mind from regular servicing at a fixed annual cost. When planning a kiln installation, advice is available on the most appropriate kiln type and size, best location, electrical and control requirements, ventilation and safety aspects. Training is given both at customers premises and at regular seminars at our Stoke-on-Trent premises. Kilns can be designed for special uses. SECTION 8 61

64 Temperature Controllers 8159H HobbyMaster 3. An economical but time proven favourite with one user-defined program of delayed start, 2 ramps and one soak. Delay & soak each up to 20 hours, ramps C/hr, or full power. Error reporting & handling of over-temperature and thermocouple & element malfunction B Digital Indicator. PP3 battery powered (>100hrs) temperature indicator suitable for R, S, K and N type T/C use. Includes case and low temperature thermocouple as shown, and plug with 2m compensating cable (high temp T/C not included). Reports kiln present & max temp, kiln room temp, thermocouple failure, low battery. Optional auto-off (power 15secs, backlight 5secs). 8159H Hobbymaster H4P Hobbymaster 4 - panel version 8159H4 Hobbymaster 4 Controller This controller has been developed exclusively for Potclays for types R, S and K thermocouples by the world renowned Orton Foundation. Its advanced features make it excellent value for money. Multiple software configurations enable it to be switched between different operational modes for Ceramic Art, Jewelry, PMC or Glass Art applications. In addition to the most popular programs being preset, there are up to 6 user defined programs, each program containing up to 8 heating or cooling rates, 8 target temperatures and 8 hold periods. The Hobbymaster 4 is available in panel form or as a complete stand-alone control box (no external contactor needed on kilns below 20amps). SECTION Firemaster 5 Controller Latest updated version of the popular Firemaster controller designed specifically for ceramics. Nine user-adjustable programs each with up to nine segments. Each segment has two ramps and one soak. Each ramp rate either heat/cool from 1 to 999 C/hour or full on. Delay & soaks each up to 100 hours. Alarm buzzer, and alarm output to auxiliary power contactor to protect against failure of control contactor. Error detection and handling:- Heater failure, Contactor failure, Thermocouple failure, Thermocouple reversal, Kiln overtemperature, Room over-temperature, selected fire time exceeded. Options include:- Lockup on error, Error ignore, power-failure recovery, firing pause/continue, Keyboard lock. Program can be changed during firing. Displays show present temperature, program selected, program stage, energy used B Digital Indicator 8159H4W Hobbymaster 4 - wallbox version Zonemaster - panel version 8162Z Zonemaster Multi-Zone The Zonemaster controller accepts types R, S and K thermocouples for use up to 1320 C. It can be used as a high specification single zone controller or for optimizing temperature uniformity within multi-zone kilns (a separate thermocouple is needed for each zone). It can be programmed either by simply entering a cone number for accurate heatwork, or by specifying up to 10 segments each with two ramps, two soaks and one damper/fan instruction. Four programs can be stored. Ramps can be full on, soaks can be indefinite. Features include delay start, re-program during firing, segment skip, damper & alarm outputs, extensive error detection and handling. Displays each zone temp, energy usage & cost, cone lookup table. The Zonemaster is available in panel form or as a complete stand-alone control box Firemaster 5 62

65 Kiln Furniture 8205 Kiln Batts (Square or rectangular) See price list for complete range. Dimensions Max. Max. Kiln 1200oC 1300oC Suitability 203x203 mm 13mm GK4 (8" x 8") x292 mm 13mm 18mm GK10 (11.5 x 11.5 ) (0.5 ) (0.75 ) 357x279 mm 18mm GK125 (14 x 11") (0.75 ) 363x363mm 18mm (14.25 x ) x280mm 18mm GK100, (17 x 11") (0.75 ) & x315mm 25mm GK250 (17 x 12 ) (1") 432x363mm 25mm GK22,29 (17" x 14.25") (0.75") & x432mm 25mm EP38,56 (17" x 17") (1 ) 457x459mm 15mm GK63,82 (18 x 16.5 ) - (0.625 ) 483x318mm 25mm EP117 (19"x 12.5 ) (1") 508x508mm 25mm EP73 (19.5" x 20 ) 3/4" 1" 559x280mm 18mm 25mm EP95 (22 x 11 ) (0.75 ) (1 ) We can cut any of the above batts to customer s specification Kiln Batts (round or hexagonal) See price list for complete range. 330dia x 15mm Round S17 (13"dia x 0.625") 388dia x 191 x 15mm Half Round S26, S39 (15.5"dia x 7.5" x 0.625") J26, J39 533dia x 18mm Round S43, S65 (21"dia x 0.75") J43, J65 533dia x 267 x 18mm Half Round S43, J43 (21"dia x 10.5 " x.75") S65, J65 673dia x 18mm Round S105 (26.5 dia x 0.75 ) 673dia x337x18mm Half Round S dia x x 0.75 KILN BATTS: Care and Use Testing and Storage Before batts are put into service they should be carefully and thoroughly dried and sounded. A dry batt can be supported by hand at its centre or suspended between thumb and finger and tapped with a metal object If it does not ring clearly a crack may be suspected. A dull sound suggests the batt is not dry. Always store batts in a dry place on edge Batt Wash Batts will very gradually become glazed from repeated glaze firings and, of course, will absorb glaze coming into direct contact. Eventually the batt surface will begin to scale off and has to be chipped away. To minimise /prevent this the batt can be protected by application of batt wash to the upper side. The coating should be regularly checked and replaced as necessary. It is not recommended to put batt wash on the props or on the kiln bricks. Thermal Shock Props and large pieces of ware create hot spots on cooling batts. Allow time to cool. Premature opening or 'cracking' of the kiln door creates uneven cooling and must never be done above 200C. Keep a good gap all round between edge of kiln batt and kiln wall 8206 Kiln Furniture sets In the description of each kiln we have indicated the number of shelves included in a furniture set. Additionally, a set also includes a selection of props sufficient to give equidistant spacing of the batts in the kiln as well as permitting wide space variation. Castellated Props Turreted props which interlock to form a very stable propping system. 1.75" (28mm diameter) " (25mm) extension height " (38mm) extension height 8209 Castellated Discs Used at junction of prop column and shelf to spread the load. 3" (76mm) dia. x.5" (13mm) thickness x.25" (6mm) effective thickness Tubular Props Rigid tubes, 1.75" (38mm) diameter which can be extended in height if necessary by addition of interlocking Extension Props. Prop No. Height (25mm (51mm) (102mm) (152mm) (203mm) (254mm) (304mm) SECTION 8 63

66 Kiln Furniture Interlocking Extension Props These are useful to interlock and extend the height of 8210 tubular props. They can also be used individually or together to form small but stable prop columns. 8211/1.5" (13mm) height plus interlock 8211/2 1" (25mm) height plus interlock Tile and Pin Cranks Universal Tile Crank A specially designed refractory frame which will support twenty-four 4.25 " (108mm) standard tiles. Approximate overall dimensions 8.75 wide x 6 1/8 deep x 11 7/8 high (221 x 155 x 303mm) SECTION Tubular Collar Tubular Base May be used at top (collar) and base of column of tubular props at junction with kiln shelf to spread the load. Especially useful with heavy shelf loadings Stilts A popular method of supporting glazed pottery ware clear of the kiln shelf. Each stilt has three arms, each terminating in an upward and downward point, thus providing minimum contact area. Point Height Diameter to Point Stilt No. mm mm mm Saddles/Pins Triangular section bars which give maximum support to large pieces and to pots having finely turned bases and rims. Useful in both biscuit and glost firings " x 3/16 (25 x 5mm) " x 1/4" (51 x 6mm) " high crank. Takes 15ea 6" tiles Pin Crank. Takes 6" or 4.25 " tiles 8220 Nichrome Wire (max 1100 C) Ideal for suspending beads etc. Approx 20 s gauge. Kanthal Wire (max 1300 C) 1.0mm, 1.6mm, 2.0mm. Supplied by the metre. Refractory Insulation Bricks 9" x 4" White, 3" thick HT " Lightweight K " Lightweight K Refractory Insulation Cement (1kg tub) For all hotface brick jointing and repair work. Paste form. Apply to dry brick. Also available in powder form: 8226P (0.5kg) Vent/Spyhole Plugs Silver/Amaco kiln plug GK/EP kiln plug Olympic kiln plug 8218 Star Stilts With short metal points. Re-usable over and over again. 64

67 Ceramics and Glass Books Would you like to find out more about any of our A&C Black books? Please ask us for our current full-colour A&C Black brochure and order form We also stock Ceramic Review - both the latest and the previous issue. SECTION 9 65

68 Health & Safety Information SECTION 10 These notes give the requirements of industrial hygiene and indicate sources of hazard which may be encountered when using Potclays products in industry, in schools and in the studio. Generally Potclays products present no special hazard in use provided that good standards of industrial hygiene are practised. Users of Potclays products are also assured that: 1. Incorporation of dangerous materials such as arsenic into any formulation has been scrupulously avoided. 2. Potentially toxic materials such as cadmium and antimony are incorporated in the smallest possible quantities consistent with obtaining reasonable results and that any inclusion of lead is in the form of a lead frit of a type approved by the Factory Inspectorate. 3. We are pleased to advise on any matter of safety. Handling of Materials Most materials are to some extent harmful when ingested. This applies equally to materials found in the home such as washing powders, boracic ointments, polishes, cosmetics, iodine, soaps etc. as well as those of the pottery and other departments. All materials should consequently be handled with care but in the pottery department certain materials deserve special mention. These are barium carbonate, borax, boric acid, silica (flint & quartz),chromium oxide, Nickel oxide, on-glaze enamels, lustres (including liquid gold), ceramic glazes generally but particularly those containing cadmium, selenium and lithium; and copper compounds. In addition, especial care must be exercised with red lead, white lead, and antimony oxide but we should point out that we do not include these materials in our catalogue range for we believe that their value to pottery departments does not outweigh the risks arising from careless use. We should perhaps mention here that distinction must be made between low solubility glazes (these contain fritted lead compounds) and the hazardous 'raw' lead compounds such as red lead and white lead. Glazes marked 'L.S.' in our catalogue do have a lead content but this is in fritted form and we absolutely forbid the use of the poisonous raw lead compounds in any of our glaze formulations. In this way we ensure that those glazes which do contain lead are of the safe 'low solubility' type which meet the stringent safety requirements of the pottery industry and which are also suitable for use in schools (see Ed. Mem. 517).The majority of glazes in our catalogue - including all the stoneware ones - are leadless, and these may be considered to be 'extra safe'. Such glazes have been marked 'L'. In this catalogue the abbreviation 'L.S.' therefore denotes those glazes which are low solubility lead ones and 'L' denotes leadless. Low solubility glazes are widely used in industry and are quite safe from a handling point of view provided that good standards of hygiene are maintained. Certainly they may be no more hazardous than certain leadless glazes and many, many other materials commonly used in the household and indeed in other crafts in schools. When considering toxicity it is consequently necessary to view the matter carefully with a just sense of proportion. It should also be remembered that the bright colours obtained from oxides or underglaze colours used under or in low solubility glazes frequently are impossible to achieve with leadless substitutes. Earthenware slipware for example would generally give duller colours than those obtained when low solubility glazes are used. Dust Problems Some materials which are not considered toxic when eaten may nevertheless be hazardous in dust form. All clays and glazes contain free silica and such airborne dust may produce silicosis if breathed in over a period of time. Reasonable care should therefore be exercised in the handling of all pottery materials. Inflammable Liquids and Materials Materials containing inflammable liquids such as liquid metals, lustres, media for enamelling and printing, oils and turpentine should be stored in a ventilated cool place where smoking is prohibited. Cloths used to clean any spillage of inflammable liquids must be carefully disposed of due to the risk of spontaneous combustion if carelessly stored. Kiln Vapours and Gases Potentially harmful vapours and gases may be evolved when firing ceramic products. Kilns should therefore be housed in a well ventilated room where kiln gases are exhausted to atmosphere. Low solubility - Definition and Test Low solubility glaze' means a glaze which does not yield to dilute hydrochloric acid more than 5% of its dry weight of a soluble lead compound calculated as lead monoxide when determined in the following manner: A weighed quantity of the material which has been dried at 100 C and thoroughly mixed is to be continuously shaken for one hour, at the common temperature, with 1000 times its weight of an aqueous solution of hydrochloric acid containing 0.25% by weight of hydrogen chloride. This solution is thereafter to be allowed to stand for one hour and then filtered. The lead salt contained in the clear filtrate is then to be precipitated as lead sulphide and weighed as lead sulphate. Glazes other than low solubility or leadless ones are prohibited in the pottery industry. Metal Release Problems Certain fired glaze and colours may release lead and other metallic compounds when in contact with acidic foods and drinks over a period of time There is a hazard to health if the amount released is above a certain level and this has led to adoption of metal release tests in many countries. All Potclays glazes and frits are formulated to meet the requirements of the standard metal release tests with a wide margin of safety except for a very few glazes in the Artistic and Economy glaze ranges which we have clearly marked thus: Such glazes have been designed for exterior or decorative use only and should not be used to glaze surfaces which may hold food or drinks. Frequently potters desire to make additions to standard glazes to obtain certain effects but it must be remembered that the indiscriminate alteration of a glaze formulation may increase its metal release characteristics beyond acceptable limits. There are generally no problems involved in the adjustment of the leadless glazes in this catalogue by the addition of all normal glaze materials except lead or cadmium. In our opinion the low-solubility glazes in this catalogue may be modified by addition of small amounts of all normal glaze materials except lead, cadmium, copper or zinc. However, it is important to realise that the responsibility for the safety of the finished articles rests with the persons producing them since production techniques and conditions may vary widely. For this reason it is advisable to submit finished pieces of ware to an independent testing laboratory before bulk production is commenced. Note that we offer a metal release testing facility at competitive rates. To summarise we would say that all Potclays transparent and white glazes and all Potclays stoneware glazes pass all known safety regulations. Glazes marked may not pass metal release tests although they are safe to handle. Such glazes should not be used to glaze surfaces in subsequent contact with foodstuffs and beverages. If in doubt we will gladly advise. Metal Release Test Potters are reminded that it is now a mandatory requirement for domestic wares to pass the following tests known as British Standard (B.S.) 6748 Part I and Part 2. BS6748 Part Flatware - Lead = 20 ppm (pans per million) Cadmium = 2 ppm Holloware - Lead = 7ppm Cadmium = 0.7 ppm Storage Vessels or any Holloware over 1100 millilitres capacity - Lead = 2 ppm Cadmium = 0.2 ppm The test involves exposure to 4% acetic acid (vinegar) at room temperature for 24 hours. Holloware is defined as 'Any article in which the ratio of height to diameter is equal to, or exceeds one half. Flatware refers to plates, saucers and dishes. BS6748 Part This refers only to cooking ware, i.e. casseroles, oven-to-tableware etc. and the testing is even more severe, involving exposure to boiling acetic acid (vinegar) for two hours followed by a cooking period of 22 hours. The limits specified are as follows: All shapes Lead - 7 ppm Cadmium. 0.7 ppm COSHH, CLAW & CHIP The Control of Substances Hazardous to Health Regulations 1988 (COSHH) which came into force on Ist October 1989, and the Control of Lead at Work Regulations 1980 (CLAW), largely replace the Pottery Health and Welfare Special Regulations They apply to all premises (including educational establishments as well as factories) where pottery is made or decorated and to the preparation and use of clays, glazes colours, materials etc. The Regulations are concerned with assessment of hazards in the ceramic workplace and demand precautions which are related to the degree of risk involved. The Chemicals Hazard Information & Packaging Regulations 1993 (CHIP) introduced further labelling and other requirements, modified by CHIP2 in As a responsible supplier we are required to advise customers of any significant risks involved with the handling and use of products supplied and to advise the protective measures required. The information given here provides such guidance but additional information is given in our leaflet H&S 5 enclosed. Copies available on request and tech. data sheets. Further practical guidance can be obtained from the Approved Code of Practice: 'Control of Substances Hazardous to Health in the Production of Pottery' which is available from HMSO ISBN

69 Technical Information: Materials & Oxides Product Material Mineral or Assigned Formula Typical Percentage Chemical Anlysis No. Rock source Formula Weight SiO TiO Al O Fe O CaO MgO Na O K O Others 3401 Alumina Hydrate Gibbsite AlWOE3HWO HWO 3406 Ball Clay (ESVA) Kaolinite AlWOE2SiOW2HWO Loss 3407 Ball Clay (Hyplas) Kaolinite AlWOE2SiOW2HWO Loss 3408 Ball Clay HVA/R Kaolinite AlWOE2SiOW2HWO Loss 3409 Ball Clay AT Kaolinite AlWOE2SiOW2HWO Loss 3402 Barium Carbonate Barytes/Witherite BaCOE Basalt Basalt MnO 3411 Bentonite Montmorillonite AlWOE5SiOW7HWO Bone Ash Calcined Ox Bones CaE(POR)W Calcium Chloride Synthetic CaClW6HWO China Clay Granite Feldspar AlWOW2SiOW2HWO Colemanite Colemanite 2CaO.3BWOE5HWO BWOE 3419 Cornish Stone Granite Cryolite Cryolite NaWAlFY Dolomite Dolomite CaCOE.MgCOE Loss 3425 Feldspar Lime Anorthosite CaO.AlWOE2SiOW M Feldspar Potash Orthoclase KWO.AlWOE6SiOW Loss 3428 Feldspar FFF Orthoclase KWO.AlWOE6SiOW Feldspar Soda Albite NaWO.AlWOE.6SiW Loss 1273 Fireclays & 03 Fireclay N6 AlWOE.2SiOW2HWO Loss Fireclay Fireclay T318 AlWOE.2SiOW2HWO Loss 3431 Flint Flint Pebbles SiOW Fluorspar Fluorspar CAFW CaFW 3440 Magnesite Magnesite MgCOE Magnesium Carbonate MgCOE (pure) Nepheline Syenite Nepheline Syenite (NaK)WO.AlWO3.5SiOW Quartz (silica) Quartz SiOW Rutile Rutile TiOW ZrOW 3458 Soda Ash NaWCOE Sodium Silicate 140 Tw NaWSiOE Talc Mica 3MgO.4SiOW.HWO Tin Oxide Cassiterite SnOW Whiting Limestone/Chalk CaCoE Loss 3472 Zinc Oxide Smithsonite/Calamine ZnO Zircon Zircon Sand ZrSiOR Zr 4502 Chromium Oxide Chromite CrWCOE Cobalt Oxide Smaltite CrWCOE Copper Oxide Malachite CuO Red Iron Oxide Haematite FeWOE Yellow Ochre Limonite FeWOE.HWO Black Iron Oxide Haematite FeO Iron Spangles Magnetite FeEOR Manganese Dioxide Pyrolusite MnOW Nickel Oxide Burnsenite NiO SECTION 10 ALL QUOTED PERCENTAGES, QUANTITIES AND MEASUREMENTS ARE APPROXIMATE 67

70 Technical Information: Clays (Analyses, Shrinkages, etc.) SLIP RECIPE FIRING to 10kg clay ANALYSIS Total CONTENT TEXTURE FIRED COLOUR Vitrifi- RANGE 3459/2 CLAY BODY Manf. Ign Shrinkage Therm Fire Other % grog 1=smooth (Oxidation) cation C Dispex Water Code SIO2 TIO2 Al2O2 Fe2O2 MnO CaO MgO K2O Na2 Loss 1100 C 1200 C Exps n clays & grade 10=coarse point C cc cc 1102 Ox St Thomas S&P % 11% (30s) Medium 4-5 Speckled Buff M Red St Thomas S % 11% (30s) Medium 4 Warm Buff Wh St Thomas S % (40s) Medium 5 Off-white grey WB P % (22s) Medium 6 Off-white WB 1108 New Farnham Pink P % 11% (30-d) Medium 4-5 Toasted Buff Flecked S'ware P % 12% (40s) Medium 4 Off-white S'ware throwing P % 12% (40s) Medium 3-4 Off-white Red S'ware P % 12% (60s) Smooth 3 Toasted Buff Ivanhoe P % 9% (60s) Smooth 3 Buff brown Camberwell S % 10% (30s) Medium 6 Buff M Craft Crank P % 9% (20s) Coarse 8 Brown Buff Buff S'ware S % 12% (85s) Smooth 2 Buff Grey Buff Body S % 12% (85s) Smooth 1 Light Buff Buffstone S % 12% (40s) Smooth 1 Light Buff Special HT S % 12% (120s) Smooth 1 Off-white School Clay S % 12% (30s) Medium 4 Light Buff Grogged Pink P % 11% (20s) Medium 6 Pink/Buff St Pauls P % (30s) Medium 6 Speckled Red Br Choc. Black P % Smooth 1 Chocolate Black M Keuper Red S % 13% Smooth 1 Light Rustic Red M Sanded Red S % 13% (40s) Medium 3-4 Light Rustic Red / Grogged Red P % 12% (30s) Medium 6 Red Terra Cotta Red S/E S % Smooth 1 Red Brown Roche Red S % Smooth 1 Light Red Brown Std Red S % Smooth 1 Red Brown Gr.Red S % (30s) Medium 3 Red Brown Ivory S % 14% Smooth 1 Ivory White Grogged White S % 13% (40-d) Medium 3 White LT25 Studio White S % 14% Smooth 1 White LT S20 Grogged White % 11% Medium 4 White White S'ware S % (90) Smooth 1 White off-white M Draycott S % 12% Smooth 1 Off-white Semi Porcelain S % 14% Smooth 1 White White E'ware S % 14% (200s) Smooth 1 White White S'ware P % Smooth 1-2 White off-white Porcelain S % (200s) Smooth 1 White Porcelain S % Smooth 1 White Bone China S % Smooth 1 Ultra White H.F.Porcelain S % Smooth 1 White Mod/Thr Clay P % 13% Smooth 1 Light Ivory/Buff Industrial Crank P % (30s) Coarse 8 Brownish Buff Raku P % (20s) Coarse 7-8 Brownish Buff Over 900C Lavafleck P % (20s) Medium 4-5 Lt Buff, Dap.Br T material S 8% Coarse 7-8 Off-white Y Y Material S % (20s) Coarse 7-8 Off-white Y SECTION 10 68

71 Index A Abrasive Block 39 Accessories 33 Adhesive Felt 40 Adjustable Bin Trolley 40 Air Hardening Clay 8 - Newclay Hardener 8 - Gloss Finish 8 - Newclay 8 Air Hose (Braided) 33 Air Hose (Vinyl) 33 Airbrush set 33 Alumina Hydrate 21 Alumina Hydrate (granular) 21 Anti-Glare Safety Glasses 41 Aprons 41 Artisan Potters Wheel 45 Artistic Glazes 12 Automatic Damper 60 B Badger Airbrushing Equipment 33 Ball Clay 21 - ESVA 21 - HV 21 - Hymod AT 21 - Hyplas 21 Barium Carbonate 21 Basalt Lava 21 Batt Wash 21 Bentonite 21 Bin Dolley 40 Biscuit Tile 34 Bisque 30 Blungers 49 Bone Ash 21 Borax 21 Botz Low Temperature Glazes: Brush on 17 Botz Stoneware Glazes 20 Botz Unidekor Colours 27 Bow Harp 37 Bow Trimmer 37 Bowls 43 Boxwood Modelling Tools 35 Brushes from Royal and Langnickel 31, 32 Buckets 41 Buff Sand No3, No4 23 Buff Stopping 23 C Calcinated Alumina 21 Calcined China Clay Grogs 8 Calcium Chloride 21 Calipers 39 Cane Handles 39 Casserole Pots 43 Castellated Discs 63 Castellated Props 63 Casting Slips 9 - Suitability Chart 9 Ceramic Café 30 Ceramics 30 Ceramics and Glass Books 65 Chameleon Glass Kiln by L&L 58 Change-over Switch 60 Chicken and Basket 43 China Clay (Kaolin) 21 Chromium Oxide 24 Clay Cutters 37 Clay Selection 2 Clock Movements and Thermometers 40 Cobalt Carbonate 24 Cobalt Oxide 24 Coilers 37 Colmanite (Boro-Calcite) 21 Coloured Decorating Slips 9 Coloured Earthenware Bodies 6 - Chocolate Black 6 - Grogged Red 6 - Keuper Sanded Red 6 - New Keuper Red 6 - Original Red S/E 6 - Red Earthenware Terracotta 6 - Sanded Red 6 Coloured Earthenware Glazes 11 Compensating Cable 61 Cone Viewer 41 Consistency Measurement 12 Contemporary Studios 30 Contents 1 Copper Carbonate (Cupric Carbonate) 24 Copper Compounds 24 Copper Oxide (Cupric Oxide) 24 Cornish Stone 21 COSHH, CLAW & CHIP 66 Courses, Seminars & Training 30 Crank Clays 6 - Crank Craft 6 - Grogged Pink 6 - Industrial Crank 6 - Ivanhoe 6 - Premium Crank Craft 6 - Sculpture Crank 6 Cristobalite 21 Cruet Stoppers 39 Cup Lawns 39 Cups and Saucers 43 D Damp Storage Cabinet 50 Deflocculants 21 Delivery 54 Digital Indicator 62 Dipping Tongs 39 Djanting Needle 39 Dolomite 21 Double Tip Texture Roller 37 Drying Cabinets 51 Ducting 52 Dust Problems 66 E Earthenware Clay Bodies 4 Earthenware Fired 5 Egg Cup 43 Electric Kilns - EasyFire Range 56 - EP Series 56 - Etruscan Top Loading Studio Electric Kilns 54 - Firemaster 55, 62 - Fuego 56 - Gold Series 56 - Hobbymaster 55, 62 - Plug and Go Kilns 56 - Silver Top Loading Electric Kilns manufactured by Potclays 55 - Zonemaster 55 Electrically Operated Truck Kilns 58 Electronic Balance 40 Electronic Bench Scales 40 Element Winding Service 61 Element Wire 61 Elements Sets 60 Etruscan Range 53 Extension Rings 59 Extraction-ventilation canopies 60 F Face Mask 41 Feldspar 21 Ferric Chromate 24 Ferric Oxide 24 Ferrous Oxide 24 FFF Feldspar 22 Fine Sand No.2 23 Firebird Range 29 Firebrick Grogs 8 Firing Overglaze Colours 29 Firing Rate 2 Firing Temperatures 2 Flatware 66 Flint 22 Folding Trolley 40 Forged Steel Modelling Tools 36 Forshammer Feldspar 22 Frits and Glazes 10 - Economy Glazes 10 - Translucent Glazes 10 - Transparent Glazes 10 - White Opaque Glazes 10 Funnels 41 G Galena 22 Gallon Mixer 49 Gas Burner Kit 59 General Purpose Bowls 41 General Purpose Medium 22 Gerstley Borate 21 GK and EP Ranges 53 Glaze and Bisque Cutter 39 Glaze and Body Stains 24, 25 Glaze Binder/Hardener 22 Glaze Hydrometer 38 Glaze Preparation 12 Glaze Suitability 2 Glaze Suspension 12 Goblets-Wine Carafe 43 Gold Eraser 29 Gold Fluid Writer 29, 34 Gram Scales 40 Greenware Seamline Cleaner 36 Grinding Medium 50 Grolleg China Clay 21 Guarantee and Maintenance 54 Gum Arabic 22 H Haematite 24 Handling of Materials 66 Heat Fuse 60 Hessian Squares 38 High Density Plaster 22 Hi-Pur Grogs 8 Hobby Slip 30 Hole Cutters 37 Holloware 66 Hose Adaptor 33 Hot Glass 30 I Ilmenite 22 Inflammable Liquids & Materials 66 Installation 54 Interlocking Extension Props 64 Iron Chromate 24 Iron Compounds 24 Iron Oxide 24 Iron Oxide-black 24 Iron Oxide-red 24 Iron Oxide-red synthetic 24 J Jar Mills 50 Jars and Jar Adaptors 33 Jugs 43 K Kelvar Guantlett Mitt 41 Kelvar Mitt 41 Kemper Clean-up Brush 36 Kemper Clean-up Tool 36 Kemper Cut-out Tool 36 Kemper Wire Cutter 37 Kiln Batts Care and Use 63 - Testing and Storage 63 - Batt Wash 63 - Thermal Shack 63 Kiln Furniture Sets 60, 63 Kiln Guard 60 Kiln Spares 60 Kiln Vapours and Gases 66 Kiln/Room Ventilation 60 Klay Gun 38 L L&L Vent-Sure powered vent 60 Lace Tool 36 Laser Kilns 59 Latex Based Mask 23 Lepidolite 22 Letter and Number Stamps 39 Lidded Bowl 43 Limestone 22 Lining Wheel 34 Lithium Carbonate 22 Locating Pins 45 Lost Wax Kilns by Potclays 58 Low Solubility - Definition & Test 66 Low-Fire Cone Glazes 15 Lucy Tool 36 Lustres 29 M Magnesium Carbonate 22 Magnesium Sulphate 22 Maintenance Service 61 Manganese Carbonate 24 Manganese Dioxide 24 Manufacturing Code 2 Marbling Solution 29 Matting Agent 22 Maximum Firing Temperature 2 Mayco Low Temperature Glazes: Brush on 16 Measuring Jugs 41 Mending broken greenware 23 Metal Release Problems 66 Metal Release Test 66 Micron Air Compressor 33 Mini Spray Gun Set 33 Mixing Powdered Medium 29 Momentum Potters Wheel 45 Mortar and Pestle 39 Mouldmaker's Size 22 Moulds To Order 30 N Needles (Fine & Thick) 37 Nepheline Syenite 22 Nichrome Wire 64 Nickel Oxide 24 Non-fired Products 30 North Star Extruder 48 O Opacifiers 22 Ordering 54 Orton Cones 60 Orton Hood Vent 60 Orton Kiln Vent 60 Oval Dish 43 Oxford Potters Wheel 45 Oxides 24 P Paint Your Own Pottery Studios 30 Painting Media 22 Pallette Knives 34 Pearl Ash K2CO3 22 Plant Pots 42 Planters 42 Plaster Moulds 42 Plastic Blended Clay Bodies 4 Plastic Blended Clays 2 Plastic Knife 36 Plates 43 Porcelain 7 - Casting Porcelain 7 - DL Porcelain 7 - JB Porcelain 7 - Southern Ice Porcelain 7 - Bone China 7 - China Clay 21 - Cool Ice Porcelain 7 - HF Porcelain 7 Potash Feldspar 21 Potter's Knife 36 Potter's Plaster 22 Powdered Clay Bodies 8 - Buff Body 8 - Chocolate Black 8 - H.F. Porcelain 8 - Low Temperature White e-ware 8 - Porcelain 8 - White Earthenware 8 - White Stoneware 8 - Stoneware 8 Pre-coated Decal Paper 29 Preparation of Colours 29 Prepared Clay Bodies 6 Printing Sticks 39 Propellant 33 Propellant Regulator 33 Pugmills Standard 46 Pugmills with Safety Switch 46 Q Quartz 22 Quest White Bentonite 21 R Raku 6 - Coarse Raku 7 - Smooth Raku 7 - Gas Kilns 59 - Tandoori 7 - Tongs 40 Raw Materials 8 - WAD Fireclay N6 8 Rayefco Craftsman Wheel 45 Rayefco Fitzwilliam Potters Wheel45 Reactive Glazes 13 Recipe Amendments 2 Refractory Insulation Bricks 64 Resist 22 Respirator 41 Rolling Guides 38 Rolling Pins (Small and Large) 38 Rotary Glaze Sieve 39 Rotary Sieve 50 Rubber Kidney Palettes 38 Rutile 22, 24 S Sack Truck 40 Saddles/Pins 64 Safety Goggles 41 Salt and Pepper 43 Salt and Pepper Drill 36 School Balance with weight set 40 Scoops 41 Screen Printing Medium 29 Sedimentation Tank 51 Selecting Clays 2 Sgrafitto Tool 36 - Fork 36 - with Brush 36 Shimpo 44 - Lever Pedal 44 - Remote Pedal 44 - Whisper 44 - NRA and NVA Pugmills 47 Sieves (Lawns) 39 Silica 22 Silica Sands 22 Silicon Carbide SIC 23 Silver Range 53 Slabrollers 48 Slip Casting Unit 51 Slip Pump 51 Slip Sieve 39 Slip Trailer 39 Smooth Throwing Stroneware 6 - Flecked Stoneware 6 - Stoneware Body 6 Soda Ash. Sodium Carbonate 23 Soda Feldspar 21 Sodium Deflocculant 23 Sodium Dispex 23 Sodium Silicate 23 Sorting Tool 39 Spare Dies 49 Spare Elements 60 Spare Filter Cartridge 52 Spare Third Wheel 40 Spectrum Glaze Crystals 19 Spectrum High Temperature Glazes: Brush on 18 Spectrum Low Temperature Glazes: Brush on 17 Spectrum Raised Accent Colours 26 Spectrum Superwriter Pens 26 Spectrum Underglazes 27 Sponges 38 Spray Gun Set 33 Spray Kit 52 Spraybooth and Stand 52 Stainless Steel Cutter 37 Star Stilts 64 Steel Palettes 38 Stilts 64 Stoneware Clay Bodies 5 Stoneware Fired 4, 5 Stoneware Glazes 13, 14 Storage Bottles 41 Storage Jar 42 Strip Tools 37 Sugar Bowl 43 T Talc 23 Talisman 2 Potters Wheel 45 Talisman Extruder 48 Tankards 43 Teacher's Coat 41 Teapots 43 Technical Information 67,68 Technical Support 30 Thermocouples 61 Thor Kilns 59 Throwing Ribs 38 Tile and Pin Cranks 64 Tile Cutters 38 Tin Dioxide 23 Tin Oxide (Stannic Oxide) 23, 24 Tool Kit 38 Tray Moulds 42 Triple Beam Balance 40 Tubular Base 64 Tubular Collar 64 Tubular Props 63 Turning Tools 37 Turpentine (Pure) 29 Twisted Wire Cutter 37 U Underglaze Application Methods 28 Underglaze Colours Underglaze Medium 22, 29 Underglaze Pencils 26 Useful Data 70 Using Cones 60 V Vanadium Pentoxide 24 Velvets 28 Venco 47 - De-airing Pugmills 47 - SUPER-twin 47 - Direct Drive Potters Wheel 45 Vent/Spyhole Plugs 64 Vibratory Sifter 50 W Wad Box 49 WAD N6 Fireclay (Plastic) 22 Wax Emulsion Resist 23 Wet Back Spraybooth 52 Wheelbats 45 Whirlers 34 - Aluminium 34 - Cork Faced 34 - Heavy 34 - Steel 34 White Earthenware 7 - Grogged White 7 - Ivory Earthenware 7 - Semi Porcelain 7 - Studio White Earthenware 7 White Grogged Stoneware 7 - T Material 7 - White Crank 7 - Y Material 7 White Sand No.1 23 White Stoneware 7 - Modelling Clay 7 - New Draycott White Stoneware 7 - Paper Clay 7 - White Special Stoneware 7 White Stopping 23 Whiting 23 Wine Carafe 43 Wipe Out Tool 34 Wire Modelling Tools 35 Wollastonite (Calcium Silicate) 23 Wood Ash 23 Wooden Taps 39 Z Zinc Oxide 23 Zircon (Zirconium Silicate) 23 Zirconium Oxide 23 SECTION 10 69

72 Useful Data SECTION 10 Important Elements Name Symbol Atomic Melting Weight Point Aluminium Al Antimony Sb Barium Ba Boron B Cadmium Cd Calcium Ca Carbon C Chromium Cr Cobalt Co Copper Cu Gold Au Hydrogen H Iron Fe Lead Pb Lithium Li Magnesium Mg Manganese Mn Nickel Ni Nitrogen N Oxygen O Potassium K Praseodymium Pr Selenium Se Silicon Si Sodium Na Strontium Sr Sulphur S Tin Sn Titanium Ti Vanadium V Zinc Zn Zirconium Zr Molecular Weights: Some ceramic materials Alumina Flint & Quartz 60.1 China Clay Lead Bisil Cornish Stone678.4 Titanium Diox Barium Carb Talc Dolomite Whiting Feldspar Po Zinc Oxide 81.4 Feldspar Soda524.3 Zircon Conversion Factors To convert from into multiply by ozs gm gm ozs lbs kg kg lbs cwts kg kg cwts tons kg tons tonnes ozs/pint gm/cm ozs/yd 2 gm/m in 2 cm ins cm 2.54 cm ins feet metres ft 3 cubic feet litres ft 3 cubic feet in Volume 1m 3 = 1000 litres = 35.31ft 3 1 litre = 1000cc = ft 3 1cc = 1000mm 3 1 yard 3 = 27ft 3 = 0.76m 3 1 imp. gallon = 4 quarts = 8 pints = 4.56 litres = US gallons 1 pint = 20 fluid ozs 1.2 US pints = litres =568cc 1 litre = gallons = pints = fluid ozs = US gallons = US pints = 1000 cc = in 3 =0.0353ft 3 1ft 3 =28.317litres = 0.028m 3 = gallons = US gallons Temperature To convert o C into o F: multiply by 9/5 and add 32 To convert o F into o C: deduct 32 and multiply by 5/9 Brongniart s Formula where: (p-20) x g W= g-1 W =ozs of dry material in one pint of slip g = specific gravity of dry material (usually 2.5 for clays) p = pint weight in ozs of one pint of slip Casting Slip Recipes Most clays can be made into casting slip as follows: Using Plastic Clay: Using Powdered Clay: 10 kg plastic clay 10kg powdered clay 10-25g Sodium Sil.140 o 12-30g Sodium Sil.140 o 10g Soda Ash 12g Soda Ash 1200cc water 4000cc water Alternatively, Sodium Dispex can be used instead of sodium silicate and soda ash. Ounces Grams 1 = B.S. Standard Sieves (Seive number is apertures per linear inch) Sieve No. Aperture in mm Pints Litres 0.5 = Dry content of one pint of clay slip at various pint weights Slip weight Dry content SG (ozs/pint) (ozs) Ounces grams per pint per litre 10.0 = Sieve No. Aperture in mm

73 Notes 71

74 Notes 72

75 Contents Potclays Ltd, Stoke-on-Trent, Hobby Ceramics Showroom.

76 Junction 16 Potclays Ltd., Brickkiln Lane, Etruria, Stoke-on-Trent, ST4 7BP England A500 'D' Road to Preston & North A34 Potclays NEWCASTLE to Congleton A50 TUNSTALL A53 BURSLEM HANLEY City Centre A5009 to Leek to Ashbourne Founded over 60 years ago, the Group now comprises the holding company, Potclays Limited, and two subsidiaries: The Potters Clay & Coal Co. Ltd. and Forward Transport Ltd. Harry Fraser Ltd. was merged into the company in 1976, H.&.L Kilns Ltd in 1983 and D.J.Shaw in The group is a relatively small one employing about 50 people. The Company operates from three sites. The main clay mine and clay production base is at Brownhills, South Staffordshire ( Swan Works ). Raw material processing and grog manufacture is at Valley Works in Etruria and other material processing, glaze manufacture, kiln manufacture, warehousing, retail shop, showroom and main offices is located at Albion Works, Etruria, Stoke-on-Trent. A34 M6 Motorway A500 Junction 15 to Birmingham HANFORD TRENTHAM FENTON LONGTON to Derby & Uttoxeter Hobby ceramics. In addition to the craft ceramics products in this catalogue we are also major suppliers to the hobby ceramics market. We are distributors for the renowned brush-on colours, glazes and stains from Mayco Colors and also for Scioto moulds who have probably the largest range in the USA. In addition we stock many moulds. We also manufacture 'Potclay White' hobby ceramic casting slip which is now a market leader, and we have a wide range of tools and accessories. How to find us: Visitors from the North should leave the A500 at the A53 junction, turn right and first left. Visitors from the South should leave the A500 at the A53 junction then turn left and first left again. Lorry access is only via Brickkiln lane entrance which is reached from the Shelton New Road junction with the A500. Potclays Kilns. We manufacture both top loading and front loading kilns, either electrically operated or gas fired and built to the highest standards. Kilns are made not only for the firing of ceramics but also burn-off kilns for lost wax investment casting and kilns for metal enamelling and glass work. A high proportion are specially built to customer's specification. Potclays Courses & Seminars. Seminars are held regularly and include a very wide range of topics. They are well suited to technicians and teachers in ceramic education and to potters, tilemakers, handbuilders etc. both beginners and experienced. Separate seminars are held for hobby ceramists and for doll makers which provide a variety of decorative techniques using brush-on colours and glazes on greenware and bisque. Please contact us for further details. For full details please ask for a leaflet. Details can also be found on our Web Sites. and Tel: Fax: sales@potclays.co.uk