Claycrete® is easy to prepare, easy to model, very economical, and exceptionally white when dried at room temperature. Finished projects are very lightweight. This non-toxic powder mixes with water to form a paste and sets in about 30 minutes. It will not stick to hands or tools during the modeling process. One pound of Claycrete® will make 97.5 cubic inches of solid material. Available in 1 lb bags.