Cordierite Mullite Square Kiln Shelf StoolsApronsOther Lithium is a high temperature

Lithium is a high temperature flux

and have a smooth carved texture

Moderately high expansion makes it suitable as a crackle glaze (with an addition of 10% kaolin)

Black copper oxide is a black powder used as a colorant in the preparation of slips and glazes

Cordierite Mullite Square Kiln Shelf StoolsApronsOther Lithium is a high temperatureThis kiln shelf is manufactured of a high refractory mullite cordierite clay body that yields a smooth, durable surface for stacking ware in your kiln. All shelves are subject to warpage at high temperatures. It is a good practice to occasionally flip the shelf in an effort to keep it straight.