Carve or extrude this clay, or heat it for easier sculpting. It stays workable when stored in a plastic bag. Sizes are approximate.
Sulfur-Free Clay—Less likely to corrode metals than sulfur-based clay. Excellent for milling, this clay can be heated to 140° F for easier sculpting. It may cause an allergic reaction in people with nut allergies.
Sulfur Based Clay—Better than sulfur-free clay for creating extremely smooth, uniform surfaces. Heat to 145° F for easier sculpting.