Mayco CG786 Obsidian Jungle Gem Glaze, 4 oz Sumi. Hake & Accessories It is a strong flux

It is a strong flux and can be used as a color modifier in glazes

Silica has a fairly high melting point

so it often needs to be fluxed with the addition of other materials that cause it to melt at lower temperatures

The most widely used plaster in the ceramic industry

such as an addition to insulating firebrick as a refractory material

Mayco CG786 Obsidian Jungle Gem Glaze, 4 oz Sumi. Hake & Accessories It is a strong fluxApply to shelf cone 04 bisque. Shake jar well and stir during the application process. Apply 3 coats with a fan brush, allow to dry between coats. Avoid placing crystals towards bottom of ware to keep them from flowing onto the kiln shelf during firing. The crystals in the glaze will melt when fired, which may create a textured surface. As that surface may be difficult to properly clean if in contact with food, we recommend crystal glazes to be used