See Josh Heim's Potter's Choice combinations cups. Josh created by using one thick coat of PC-12 (Blue Midnight) as a base. Then 3 coats of the top coat were applied. Josh recommends letting the glaze dry in-between coats. Josh used a fan brush to apply the glazes because it allows for a more even coverage. AMACO 46-M Clay, a Cone 5/6 stoneware clay, was used to create the cups.