Raw Materials & Chemicals
Clay & Minerals PV Clay (Plastic Vitrox)
PV Clay or Plastic Vitrox Clay is a mineral made of clay, mica, feldspar, and silica used in clay and glaze recipes. It has high silica content, casting proerties, low iron, long firing range, and low loss on ignition. This material will vitrify around cone 6 but turn white closer to cone 10. Its color and working properties have made people describe it as "nature's pure porcelain". Information gathered from Digitalfire Ceramic Materials Database The original 50# bag is light tan and says PRO-TECH (no markings to identify that it's PV Clay or Plastic Vitrox)
$2.50 - $44.50
Clay & Minerals Synthetic Red Iron Oxide (high purity 325 mesh)
Red Iron Oxide is possibly the most common colorant in the ceramics industry. It is used in oxidation to create lovely browns, tans, and yellows. In reduction, red iron oxide becomes a flux, making the glazes melt off the ware. Information gathered from Digitalfire Ceramic Materials Database and The Potter's Dictionary of Materials and Techniques by Frank Hamer. PLEASE NOTE:If you are mixing up a Steven Hill glaze that calls for "High Purity Red Iron Oxide," he gets his materials through another source - US Pigment. Steven has said that his Red Orange glaze will NOT turn out as expected if you use a different iron. Steven went on to tell me that using the US Pigment version of the high purity red iron oxide is not as critical in the Juicy Fruit glaze recipe.
$10.00
Clay & Minerals Pyrotrol (Pyrophyllite)
Pyrotrol (Pyrophyllite) is a low expansion material that will lower the shrinkage of the other materials around it. It will also make clay bodies stronger as it encourages the growth of mullite in the body. Information gathered from Digitalfire Ceramic Materials Database
$2.50 - $22.00
Clay & Minerals Ravenscrag Slip Clay
Ravenscrag Slip Clay is a material that can be added to glaze slurries or used as a cone 10 reduction glaze by itself. At cone 10 reduction, it fires to a silky transparent glaze that can be used as a base for colorants or other additives. When this material is added to a glaze slurry, it suspends the mixture as well as improving eveness of application, drying speed, and reduces shrinkage. Information gathered from Digitalfire Ceramic Materials Database.
$4.00 - $70.00
Clay & Minerals Lite-Tone Rutile Powder
Rutile is the mineral name for the naturally occurring crystals of titanium dioxide. While this material does produce creams, yellows, and oranges, it is not considered a colorant but a variegator in glazes. It can produce crystalline, speckling, streaking, and mottling effects in glazes during cooling. Rutile can be purchased as lite rutile, which is a calcined powder, dark rutile, a raw powder, and granular. It is best to use Lite rutile in glazes for less imperfections during firing. Information gathered from Digitalfire Ceramic Materials Database and The Potter's Dictionary of Materials and Techniques by Frank Hamer.
$5.00 - $15.00
Clay & Minerals FFF Silicon Carbide
Silicon Carbide is a refractory, artificial compound primarily used to make kiln furniture to due its hardness and ability to withstand high heat and thermal shock. The material can also be used in glaze and slip recipes to do local reduction in an oxidation firing and to make crater and foam glazes, due to the gas it releases in firing. Information gathered from Digitalfire Ceramic Materials Database and The Potter's Dictionary of Materials and Techniques by Frank Hamer.
$15.00
Clay & Minerals Nepheline Syenite A200 (200 mesh)
Nepheline Syenite is a powerful flux used in many clay bodies and glaze recipes. While it is similar to feldspar in chemistries, Nepheline Syenite contains no quartz. This material is so loved because of its white color it adds to clay bodies and for its use in low temperature clay bodies to increase their thermal expansion. Information gathered from Digitalfire Ceramic Materials Database.
$2.50 - $32.00
Clay & Minerals Hawthorn Fireclay - 35 mesh FULL BAG
Hawthorn Fireclay is a refractory, buff colored fireclay. It is a very popular material that is used in many clay recipes. Hawthorne has an incredibly high plasticity and a high temperature, vitrifying around cone 8-10 (with the small addition of a feldspar) and shrinking about 12% at cone 10. Information gathered from Digitalfire Ceramic Materials Database. 50# bag; brown bag, blue text Minerals and 35 Mesh Bond
$14.00
Clay & Minerals Frit 3110
Frits are parts of a glaze recipe that have been melted and ground to be added into a new glaze recipe. Frit 3110 is a soft sodium borosilicate frit that can be found in recipes of all temperatures, commonly found in crystal glazes. This material has a similar chemistry to feldspars, making it useful in high feldspar recipes to substitute some of the feldspar for frit 3110 to make the mixture have more slurry properties and add kaolin to the mix. When frit 3110 is used in combination with frit 3403, bright and semi matte wall glazes can be produced. Information gathered from Digitalfire Ceramic Materials Database and The Potter's Dictionary of Materials and Techniques by Frank Hamer.
$6.00 - $95.00
Clay & Minerals Frit 3124
Frits are parts of a glaze recipe that have been melted and ground to be added into a new glaze recipe. Frit 3124 is one of the most popular and useful frits due to its almost glaze-like chemical balance. The material is a source of calcium boron in glazes and can be used to make wall tile and pottery glazes. This frit melts at a low temperature and has medium thermal expansion, making it fit most clay bodies. Information gathered from Digitalfire Ceramic Materials Database and The Potter's Dictionary of Materials and Techniques by Frank Hamer.
$6.00 - $135.00
Clay & Minerals Frit 3134
Frits are parts of a glaze recipe that have been melted and ground to be added into a new glaze recipe. Frit 3134 is a very popular frit that is used as a melter in all temperatures. Many reasons make this frit so popular in the ceramics industry. One of these reasons being its high boron content, making it a great flux. Another being it's high calcium oxide content which is crucial to making chrome tin pinks and maroons. This frit contains no Alumina, meaning the alumina can be sourced from the clay instead which will harden and suspend the slurry. Lastly, the material has high. sodium which reduces feldspar and gives alumina more opportunity to come from the clay. Information gathered from Digitalfire Ceramic Materials Database and The Potter's Dictionary of Materials and Techniques by Frank Hamer.
$6.00 - $160.00
Clay & Minerals Frit 3195
Frits are parts of a glaze recipe that have been melted and ground to be added into a new glaze recipe. Frit 3195 works well at stoneware temperatures and is a great source of boron. This frit can be a complete low fire glaze, with the addition of kaolin, and adding more kaolin and silica will allow it to go to higher temperatures. It is not good for making underglaze as it has a high boron content. Information gathered from Digitalfire Ceramic Materials Database and The Potter's Dictionary of Materials and Techniques by Frank Hamer.
$6.00 - $165.00
Clay & Minerals Custer Feldspar *** FOR SALE TO EXISTING CUSTOMERS ONLY***
CUSTER SHORTAGE INFORMATION: %%GLOBAL_ShopPathSSL%%/this-just-in/gerstley-custer-and-epk-issues/ Custer Feldspar is a potash feldspar. This material is used very commonly in glazes as a flux and glass former. Custer feldspar is no longer being mined.
$2.50
Clay & Minerals Frit 284M
Frits are parts of a glaze recipe that have been melted and ground to be added into a new glaze recipe. Frit 284M is a barium frit that is useful in barium matte floor tile glazes and making bright colors in cones 05-03. It is a replacement for frit 3289. Information gathered from Digitalfire Ceramic Materials Database and The Potter's Dictionary of Materials and Techniques by Frank Hamer.
$6.00
USG Corporation Hydrocal FGR-95 FULL BAG
Hydrocal is a white, gypsum cement that is used for casting items and making molds. It is especially great for casting thin items because of its strength. This material has a 25-35 minute set time. Infromation gather from USG. Instructions for use SDS
$39.00
Clay & Minerals Fusion Frit F38
Strontium Flux OXIDE ANALYSIS FORMULA CaO 4.20% 0.230 Na2O 5.50% 0.272 SrO 16.80% 0.498 Al2O3 4.20% 0.126 B2O3 15.00% 0.662 SiO2 53.10% 2.712 ZrO2 1.20% 0.030 Oxide Weight = 307Formula Weight = 307Co-efficient of Linear Expansion = 6.18Frit Softening Point = 1550°F Information from the Digitalfire Ceramic Materials Database
$8.00
Clay & Minerals Fusion Frit F69
Frits are parts of a glaze recipe that have been melted and ground to be added into a new glaze recipe. Fusion Frit F69 is a frit with low thermal expansion, making it great as a base glaze. This frit is particularly useful in solving crazing problems in low and medium temperature glazes. Information gathered from Digitalfire Ceramic Materials Database and The Potter's Dictionary of Materials and Techniques by Frank Hamer.
$10.00 - $445.00
Laguna OptiKast
OptiKast is a coarse grained kaolin. It's primary use is in casting slips because of it's fast casting and deflocculation properties, which also make it useful in pressure casting systems. Optikast is the recommended substitute for Velvacast kaolin. Information gathered from Digitalfire Ceramic Materials Database.
$48.10
Clay & Minerals SGP #1 Ball Clay
SGP #1, also known as Tennessee Ball Clay #1, is a coarse grained ball clay with medium plasticity and strength. It is an industry standard for casting due to its fast casting properties and can be used as a suspender in glaze slurries. 50# bag; brown bag, TN #1 SGP printed on side
$2.50 - $21.00
Clay & Minerals Kyanite, 35 Mesh
Kyanite is an incredibly refractory material with low thermal expansion. Its presence in a clay body makes it resistant to thermal shock, reduces fired shrinkage, and increases its mechanical strength. Information gathered from Digitalfire Ceramic Materials Database
$36.00
Clay & Minerals Mullite, 48 mesh
Type a description for this product here...
$35.00
Clay & Minerals Mullite, 100 mesh
$50.00
Clay & Minerals Mullite, 35 mesh
$35.00
Clay & Minerals Mulcoa, 20 mesh
Mulcoa is calcined mullite that is mainly used as a grog in clay bodies. It is also commonly used in stucco and investment casting. Information gathered from Digitalfire Ceramic Materials Database.
$65.30
Laguna Newman Red FULL BAG
Newman Red is a red burning fireclay. It has low plasticity and low dry strength and is loved for its very strong staining abilities. Information gathered from Digitalfire Ceramic Materials Database.
$51.40
Hammill & Gillespie New Zealand Kaolin FULL BAG
New Zealand Kaolin is considered to be the whitest kaolin sold globally. In porcealin bodies, it fires whiter and more translucent than bodies made with grolleg. However, it is a less plastic material and makes a less vitreous clay body than grolleg. In glazes, New Zealand Kaolin will suspend and dry harden slurries. It produces very clear glazes because of chemical composition. This material is very sticky in clay bodies and glazes. In glazes, it is important to sieve the slurry made with NZK to properly disperse the clumps of material that will be made. Information gathered from Digitalfire Ceramic Materials Database.
$75.00
Clay & Minerals Macaloid
Macaloid is a very white suspender. This material would be used in poreclain clay bodies instead of bentonite.
$10.00
Clay & Minerals Frit 3292
Frits are parts of a glaze recipe that have been melted and ground to be added into a new glaze recipe. Frit 3292 is a balanced glaze material, meaning it can make up the bulk of recipe. It is useful in firstfire sanitary ware (bathtubs, sinks, toilets, etc). Information gathered from Digitalfire Ceramic Materials Database and The Potter's Dictionary of Materials and Techniques by Frank Hamer.
$4.00
Clay & Minerals Gillespie Borate
Gillespie Borate is a man-made material that is a 1:1 substitute for Gerstley Borate, which was commonly used as a melter in glazes. This material is very similar to Gerstley although is does not contain all of the impurities that Gerstley did. Information gathered from Digitalfire Ceramic Materials Database.
$4.00 - $90.00
Clay & Minerals Precipitated Calcium Carbonate
Precipitated calcium carbonate is an incredibly pure version of calcium carbonate. It becomes useful in glaze recipes where regular calcium carbonate will not work correctly.
$125.00
Clay & Minerals Frit 3269
Frits are parts of a glaze recipe that have been melted and ground to be added into a new glaze recipe. Frit 3269 is a significant source of boric oxide and alumina oxide with almost no calcium oxide. The material is used in gloss tile glazes fro cones 06-01. The frit is balanced enough to use on its own, but has a high thermal expansion, making it useful as a crackle glaze. Information gathered from Digitalfire Ceramic Materials Database and The Potter's Dictionary of Materials and Techniques by Frank Hamer.
$6.00 - $85.00
Hammill & Gillespie G200-EU Feldspar (potash)
G-200 Feldspar is a high quality potassium / sodium / calcium aluminum silicate ground to 200 mesh for ceramic applications. Carefully beneficiated and controlled for quality, G-200 offers high potash content and low iron oxide per unit of alumina.
$2.50 - $55.00
