Slipcast from a specially formulated clay body, they have an exceptionally smooth surface, accept kiln wash uniformly, and do not crack under repeated usage if handled properly.

Note: The measurements given here are for the outer dimensions of the moulds. This is to help you determine whether a given mould will fit in your kiln. Since they are handmade, individual moulds will vary in size. Never cut glass to fit until you have measured your mould.