St Thomas Clays
Oxidising St Thomas 150-1102
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 150-1104
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 150-1106, 150-1506
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 150-1506 version is particularly free of natural speckles, and both will withstand high temperatures.
General Stoneware
Buff Stoneware 151-1117
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 151-1120
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 151-1124
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 151-1514
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 159-1131
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 1200C the body takes on a purple tone.
Keuper Sanded Red 159-3140
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 159-1134
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 159-1135
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 159-1137
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 159-3730
Based on our 159-1137 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 159-2130
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 152-1109, 152-2109
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 152-2109 version is similar to 152-1109 but is based on higher purity sliphoused materials and is more attractively priced.
Stoneware Body 152-2110
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.
Staffordshire Stoneware 152-1115
New to our catalogue, this plastic stoneware body is ideally suited to throwing, and can be used in both oxidation and reduction firings, producing a warm toasted colour. Having similar thermal properties to our white stonewares, it is also suitable for oven-to-table ware production.
Crank Clays
Ivanhoe 152-1112
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 153-1114
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.
Premium Craft Crank 153-3114
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 153-7070
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 153-1127
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 153-1153
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 154-1154
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.
Coarse Raku 154-1156
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 154-1159
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 154-0131 (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 156-0630
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 156-1161
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 156-2161
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
DL Porcelain 155-1147
Similar to the original David Leach body, this white, translucent porcelain is excellent for throwing.
HF Porcelain 155-1149
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 155-4000
Whiter firing than almost all other porcelains, this body developed by John Beeston, technical manager at Potclays, offers good throwing properties combined with high translucency and quality at an affordable price.
Southern Ice Porcelain (LBSI) 155-1151
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 155-1152
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 155-1148
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 157-1145, 157-2145
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 157-2145 version is similar to 157-1145 but is based on higher purity sliphoused materials and is more attractively priced.
White Special Stoneware 157-1142, 157-4230
White firing and smooth textured, this clay throws and handles well and is a very good body for domestic ware. The 157-4230 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 157-1143
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 157-1150
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 158-2138
A good earthenware body for slip casting of general and domestic ware.
Studio White Earthenware 158-1141
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 158-4130
Based on the 158-1141 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) 158-4120
Graded molochite grogs are included in the 158-1141 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 158-2144
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 180-1190
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 180-1192
All the wonderful qualities of LBSI combined with the versatility of paper clay.
Buff Paperclay 180-1193
Developed in Australia, this buff paperclay has a wide firing range offering flexibility in use.
Red Paperclay 180-1194
Developed in Australia, this red paperclay has a wide firing range offering flexibility in use.
