This air hardening is kid-safe and a wonderful introduction to clay for creatives of all ages. It clay dries within 24 hours and eliminates the need for an oven or kiln. Its texture is very smooth and refined, and can be used on various supports such as wood, cardboard and plastic. Create sculptures and explore hand-building techniques such as coil-building or slab work. Forms can be painted wet or dry with nearly any type of paint. Use stains to color or even marble the clay. It also takes most types of glue.