Silica (Silica Flour / Flint) — SiO2, 525 Mesh

Available from Seattle Pottery Supply when we last checked. Sold from the shop’s own store; the price there is the one that counts.

High-purity ground silica (SiO2, 99.5%+) — the essential glass former for glazes and structural silica for clay bodies. Also known as silica flour or flint. Available in 200 mesh (clay bodies, thick work), 325 mesh (the standard glaze grade), and 525 mesh (ultra-fine, fastest melt). Contains crystalline silica — respirator required when handling dry powder. Please note that our silica supplier has recently changed. The material may have a slightly different color, but material properties remain