Sculptamold modeling compound is a dry, non-toxic material that can be used to create finished objects are lightweight and extremely durable. Experience the best features of clay, plaster and paper mache in one modeling material! Perfect for creating sculptures, dioramas, model railroad scenery, props and more. Simply add water as directed on the bag and begin modeling. Sculptamold clings to most clean surfaces and can be applied to armature without fear of cracking, even with multiple layers. Sculptamold is non-toxic and hardens in only 30 minutes.