Sculpey Polymer Clay Individual Color Bars America's original oven bake clay! Sculpey is soft and pliable, works and feels like ceramic clay, but will not dry out when exposed to air. Shape it into your desired form and bake according to package instruction (typically 275 degrees Fahrenheit for 15 minutes for every 1/4 inch of thickness). Once cool, it can be sanded, drilled, carved, and painted with water based acrylics. Ideal for sculpture for both professionals as well as children. Non-toxic. Open stock colors are 2oz bars.