Cornwall Stone, Ceramic Flux, Substitute, FreeShip.
$6.89
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Cornwall stone is one of the many ceramic materials that are no longer "original". The source mine is a mine that has dried up. True cornwall stone is not being sold. Ceramists knew the mineral composition, or "formula", and from that formula were able to construct a substitute. This particular substitute is quite close to the original. CSS is a complex mix of minerals. It is similar to feldspar and it's often used where a feldspar would be used, especially in glazes. It acts as a flux in glazes and clay bodies above cone 6. Another material that is similarly close to feldspar is nepheline syenite. It too is a mix of several minerals and is also similar to feldspar....(see more)
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