Coyote MBUG026 Violet Underglaze TextureSphereSmall and develops intense blue crystals

and develops intense blue crystals when it cools slowly

This interbox plug & receptacle is an old style model for use with all older Olympic stackable electric and glass kilns

As for silica's function in clay and glazes

It offers excellent working properties and has a wide firing range

Coyote MBUG026 Violet Underglaze TextureSphereSmall and develops intense blue crystalsA solid vibrant purple. Provides more reliable coverage than the Violet glaze, but must be covered with a Clear glaze for functional ware. Coyote Underglazes are the only commercially available underglazes specially designed to be fired at cone 5 6. The colors can be mixed, and stay true and stable up to cone 10 in oxidation. They are always bold and striking, and are suited to functional ware when covered in Coyote Gloss Clear and fired to cone 6.