Raw Materials

Grog is a hard-fired clay crushed to various mesh sizes. It may be added to clays for tactile and visual texture. It can aid in opening the body fo...

Grog is a hard-fired clay crushed to various mesh sizes. It may be added to clays for tactile and visual texture. It can aid in opening the body fo...

Grog is a hard-fired clay crushed to various mesh sizes. It may be added to clays for tactile and visual texture. It can aid in opening the body fo...

A blended English china clay, combining moderate plasticity, low titania content and relatively high flux content, low shrinkage and white fired co...

Produces grey brown colors in engobes and in underglazes that include zinc. If tin is present it may produce pink and reddish browns. Can also be a...

A fine-grained ball clay with excellent plasticity and strength. Old Mine #4 is an "industry standard" based on its popularity in both casting and ...

A protective coating for kiln shelves and other areas inside the kiln that may be subjected to dripping glaze during firing. Mix this dry compound ...

A refractory material used to reduce shrinkage in clay bodies. Because of its interlocking crystal structure it also gives strength to clay bodies. 

Donated to Cornell by Nan Zantal. All proceeds will go to supporting Sinclair Community College Students looking to attend workshops at Cornell. Th...

It is a source of Lithia for glazes. A strong flux, beginning to aid in the melting of glazes at 1472°F. Used extensively as a secondary flux in le...

A naturally mined iron titanium oxide mineral. It is generally black as sand, odorless, tasteless, opaque under a microscope, non-flammable and ins...

Source of magnesium in glazes. Imparts strength and color with little shrinkage. In larger proportions, it produces a dry opaque quality to glazes.

Good substitute for Custer Feldspar. A selected white firing high grade potassium feldspar ground to 200 mesh for ceramic applications. Moderate po...

A weak coloring agent. In an alkaline glaze, a blue-purple or plum color can be obtained. In leadless glazes, a purple-brown may result. It is a po...

A black powder which gives red, brown, purple or black tones to clay bodies and glazes. A strong flux when added in large amounts to clay bodies.

Donated to Cornell by Nan Zantal. All proceeds will go to supporting Sinclair Community College Students looking to attend workshops at Cornell. A ...

A soda spar. It can reduce crazing tendencies when added to a clay body. Also used in glazes where a soda spar is required.

Common glaze colorant. Green nickel produces a variety of browns, blues, grays and yellows depending on the presence of other materials in the glaze.

A natural hydrated earthy ferric oxide. Contains hydrated iron oxide. Can be calcined at 550-600°C.

Also known as Pearl Ash. It is a strong flux and can be used as a color modifier in glazes.

Can be used to increase plasticity in porcelain bodies instead of Potash Feldspar; a complex material similar to and sharing properties with Potash...

USG Pottery Plaster is great for all types of ceramic slip casting applications. Pottery plaster is formulated for long life and reduced breakage (...

A type of feldspar which can be used in glazes. It is not desirable in clay bodies.