Chavant - Professional Plasteline - 2 lb - Green - Chavant Professional Plasteline is a superior, ready to use, sulfur based, modeling compound ideal for the professional sculptor and all school levels. Plasteline is soft, smooth, permanently pliable, reusable and requires no heating. Chavants original formula and blending process assures plasteline of consistent high quality. Available in Gray, Green and Brown. Chavant modeling clays are used throughout a variety of industries in many different and unique ways. Chavant clays are oil / wax based, reusable, do not create dust, can be modeled by hand or machine and do not permanently harden, allowing work to continue for indefinite periods of time. The clays are not meant to be fired in a kiln or cured in an oven. In fact, when working on a project with these clay bodies, a user is not working on the final project at all. The advantage of this modeling process is that surface revisions can be made indefinitely.