Glossary

modeling clay

A non-hardening substance used for modeling sculptures-- for sketches, models for casting, and by students. It is plastic (in the sense of being workable). It cannot be used for permanent work (unlike ceramic, water-based clays, it is never fired or glazed). Although it becomes less useful as its oil either dries or is absorbed from it (making it brittle) or as it picks up impurities, but it can be reused for many years if kept relatively clean. Even new it can vary greatly in quality. Most common varieties are made of clay mixed with petroleum greases, oils (typically linseed oil), and a pigment. It softens as it is modeled by the hands (because of their warmth), pieces joined to each other by pressing them together and blending with fingertips. Equipment that might be used with modeling clay includes modeling tools and armature. Molds can be made from modeling clay. There are numerous commercially produced types, including the brand named Plasticine. (Hint: before washing it off of hands and other surfaces, scrub with a dry paper towel.) It is sometimes called model clay.