Dry Clays

Price per Pound in Full Bags

Price per Pound in Full Bags

Price per Pound in Full Bags

Chemicals

Price per Pound in Full Bags

Alumina Hydrate AI(OH)3 — A source of alumina in glazes, promotes opacity and mattness and increases hardness and durability. Very refractory. Used in Kiln wash.

Barium Carbonate BaC03 — The best way to introduce barium oxide in glazes, functions as a high temperature flux. Can produce satin matt glazes. In excess causes rough, dry glaze surface. TOXIC.

Bentonite Western (325 mesh) — A highly plastic clay used in small amounts as a plasticizer in clay bodies and a suspension agent in glazes. > 3% can cause cracking in unfired glaze due to shrinkage.

Bone Ash (Tri Calcium Phosphate) Ca3(PO4)2 — Bone ash is a source of calcium phosphate. It is used as a flux in clay bodies. Also used as an opacifier in glazes and to assist in formation of opalescence (as in Chun glazes.)

Burnt Umber — A hydrated ferric oxide with manganese dioxide and clay. It can be used as a slip or clay body colorant and produces a reddish-brown color.

Price per Pound in Full Bags

Chrome Oxide Cr2O3 — A powerful and versatile glaze colorant that can produce a variety of colors including green, yellow, pink, brown, and red.

Cobalt Carbonate CoCO3 — Used as a slip and glaze colorant, produces various shades of blue or purples where manganese is present. Due to fine particle size, it is more easily dispersed in glazes than cobalt oxide.

Cobalt Carbonate CoCO3
Now Available in 1/2 lb. Bags

Cobalt Oxide Co3O4 — Cobalt oxide is the most powerful ceramic pigment available. Used in slips and glazes in very small amounts, it produces strong blue colors.

Cobalt Oxide Co3O4
Now Available in 1/2 lb. Bags

Copper Oxide, Red Cu2O — Made by heat treating Black Copper Oxide. Red Copper is insoluble in water, making it more difficult to work with.

Copper Carbonate CuCO3 — A versatile, fine particle glaze and slip colorant which can produce greens, blues, or reds depending upon glaze composition and firing conditions.

Copper Oxide, Black CuO — More concentrated than copper carbonate, it is a strong colorant and flux.

Cornwall Stone (English) — An English feldspathoid used as a flux in clay bodies and as a major constituent in glazes.

Dolomite (Limestone) CaMg(CO3)2 — Dolomite is a naturally occurring mineral that contains calcium carbonate and magnesium carbonate. It is used as a flux in high temperature glazes wherever both magnesia and lime are required.

Feldspar, Custer (325 mesh) — A potash feldspar used in both clay bodies and glazes. It can function as a flux or as a refractory depending upon formula and firing temperature.

Feldspar, G-200 (Potash) — A potash feldspar used in glazes and clay bodies.

Feldspar, Kona F4 (Soda) — A soda feldspar used in clay bodies and glazes where a sodium flux is required.

Price per Pound in Full Bags

Frit, Ferro 3110 (leadless, 200 mesh) — Frits are combined raw materials that are mixed, fired, melted, crushed and ground into a powder. The reason for fritting is to render soluble materials insoluble; decrease toxicity of raw materials such as lead, barium and zinc; reduce fusion point of glazes; and to avoid volatilization of unstable substances.

Frit, Ferro 3124
(leadless, 200 mesh)

Frit, Ferro 3134
(leadless, 200 mesh)

Frit, Ferro 3195
(leadless, 200 mesh)

Frit, Ferro 3269
(leadless, replaces 3819)

Frit, Ferro 5301
(leadless, 200 mesh)

Gerstley Borate 2CaO•3B2O3•5H2O — A sodium/calcium/borate compound used as a flux in glazes. It is used to introduce boric oxide in an insoluble form and as a more stable substitute for colemanite.

Grog - Fine (48 mesh & finer) — Ground, fired clay added to clay bodies to improve workability and strength and to give texture. The addition of grog also reduces shrinkage, warpage, and cracking in drying and firing.

Grog - Medium (20-48 mesh)

Grog - Course (12-20 mesh)

Hydrocal - A neutral gypsum cement that is harder and less porous than pottery plaster. Preferred when strength and durability are more important than water absorption. (50lbs. Minimum Order)

Ilmenite Powder (200 mesh) FeO•TiO2 — The ore of titanium and iron: a combination similar to rutile but with more iron. Powdered Ilmenite is used to modify other colorants in glazes and produce subtle speckled effects in clay bodies and glazes.

Ilmenite Granular FeO•TiO2—
The ore of titanium and iron: a combination similar to rutile but with more iron. Granular ilmenite is used to produce speckled effects in clay bodies and glazes.

Price per Pound in Full Bags

Iron Oxide (Spanish Red) Fe2O3 — Ferric oxide. Generally used as a colorant in clays and glazes where iron is required. Red iron has a finer particle size than black iron which makes it disperse more easily in a glaze. In mid-high temperature ranges iron oxide will act as a flux, noticeably lowering the firing range of glazes.

Iron Oxide (Black) FeO — Ferric oxide. Produces the same range of colors as red Iron oxide when used in glazes but is preferred by many potters when making Celadon glazes for Reduction firing.

Iron Chromate FeCrO4 — Form of Iron usually used when darker browns and red-browns are desired.

Lithium Carbonate Li2CO3 — A slightly soluble source of lithium. When used as a flux in glazes it can extend firing range, reduce thermal expansion, and promote brilliant colors.

Magnesium Carbonate MgCO3 — This is used in glazes as a source of magnesium oxide. A refractory as low temperatures, it becomes as active flux at high temperatures. It produces matt surfaces , increases glazes viscosity, and improves adhesion of glaze to clay.

Manganese Dioxide (325 mesh) MnO2 — A fine particle ceramic colorant which usually produces browns in glazes but can give purples in combination with cobalt or alkaline fluxes.

Molochite (30 mesh) — A white porcelain grog. Reduces shrinkage, warpage, and cracking, while maintaining color in white clay bodies.

Molochite (50-80 mesh)

Molochite (120 mesh)

Molochite (200 mesh)

Price per Pound in Full Bags

Nepheline Syenite (Peak 270) K2O•Na2O•4AI2O3•9SiO2 — A useful substitute for feldspar, nepheline syenite melts at a lower temperature. It is widely used as a flux in both clay bodies and glazes.

Nickel Carbonate (purified) NiCO3 — When used alone as a glaze colorant, nickel carbonate usually produces greenish or brownish grays.

Nickel Oxide (Black) Ni2O3 — Reverts to Green Nickel at around 1100°F when used in a glaze producing very similar results.

Nickel Oxide (Green) NiO — More concentrated than nickel carbonate, nickel oxide is used in small percentages to produce mute colors in glazes. It is refractory and can raise the maturing temperature of glazes if used in large amounts.

Nylon Fibers (Dupont 105) — A fiber which can be added to clay bodies to increase wet strength. Especially useful for handbuilding large slab forms, the fibers create an inner structure in the clay allowing for easier handling of larger slabs. The fibers are approximately 1/2" long and burn out during firing.

Ochre, Yellow — An iron oxide ore used as a colorant in slips, clay bodies, and glazes. Produces colors similar to iron oxide.

Petalite

Plaster, Pottery (Georgia Pacific K-59) — The standard of the industry, equivalent to No. 1 Pottery Plaster. Recommended for most slip casting applications for strong, long-lasting molds.

Potassium Carbonate (Pearl Ash)

Pyrophyllite Al2O3•4SiO2•H2O — A hydrated aluminum silicate used in clay bodies to decrease thermal expansion, shrinkage, and cracking and to extend firing range.

Rutile, Ceramic Grade TiO2 — A natural ore containing titanium dioxide and a small amount of iron. Used as a slip and glaze colorant, rutile produces creams, tans and browns in oxidation and various bright oranges and blues in reduction. 

Price per Pound in Full Bags

Silica Sand — A very coarse form of silica used to add texture and strength to clay bodies.

Silica (Flint, 325 mesh) SiO2 — The fundamental constituent of glazes and component of clay and other ceramic raw materials. Used in glazes, flint will raise the maturing temperature, increase the viscosity of melt, and increase hardness and craze-resistance. The addition of silica to clay bodies makes the fired clay harder and more durable and improves glaze fit.

Silica (Flint, 400 mesh) SiO2

Silica (Flint, 200 mesh) SiO2

Silicon Carbide (250 mesh) SiC — In powdered form, used as a glaze ingredient for special effects such as crater glazes and localized reduction.

Silicon Carbide - Ultrafine (1000 mesh) SiC — Specially fine-ground for improved dispersion. 

Soda Ash Na2CO3 — Sodium Carbonate. Frequently used as a soluble deflocculant in slip-casting bodies, it increases strength and reduces shrinkage.

Spodumene Li2O•AI2O3•4SiO2 — A lithium feldspar used in glazes to reduce shrinkage and lower vitrification temperature. In clay bodies it decreases thermal expansion.

Strontium Carbonate SrCO3 — A glaze flux similar to Whiting which promotes more craze and scratch resistant glaze surfaces. 

Superpax (Opacifier) ZrO4• SiO2

Talc (Nytal 100, 325 mesh) 3MgO•4SiO2•H2O — Useful as a flux in low temperature clay bodies and in glazes at both high and low temperatures. Also functions as an opacifier in glazes and reduces thermal expansion.

Tin Oxide SnO2 — Dependable and widely used as a glaze opacifier. It has a refractory effect on glazes and can increase craze resistance.

Price per Pound in Full Bags

Titanium Dioxide TiO2 — Used primarily as an opacifier in glazes, titanium dioxide produces matt surfaces.

Veegum-T — An iron-free colloidal magnesium aluminum silicate used as a plasticizer-lubricant in white clay bodies. A good binder for extruder bodies. It can also be used as a suspending agent for glazes.

Volcanic Ash (Pumice) — A naturally occurring, fine particle material used in glazes to replace feldspar and flint. Single color changes may result from the iron oxide content of the ash.

Whiting CaCO3

Wollastonite — A naturally occurring calcium silicate; wollastonite is used in both clay bodies and glazes to reduce drying and firing shrinkage and improve fired strength.

Zinc Oxide ZnO — Generally used as a flux in high temperature glazes, zinc oxide lends opacity and encourages crystal growth when used in large amounts. 

Zircopax Plus (opacifier) ZrSiO4 — Current substitute for Superpax and original Zircopax. A fine-particle zirconium silicate used as a glaze and slip opacifier. Disperses very easily. Substitutes 1:1 for Superpax; may require less when substituted for original Zircopax.

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