Plastilina is a wax- and oil-base modeling material used by sculptors for modeling pieces. Plastilina can also be referred to as plasteline, plasticium, and plasticine. The main ingredients are wax, oil, and clay flour that is used as a binder. All plastilina is produced hot, and then cooled and extruded into the shape that will eventually be available for sale in art supply stores. Plastilina is used as a modeling material only and cannot and should not be fired in any way. Plastilina cannot be made permanent. A mold of plaster or rubber must be made to obtain a finished piece. Plastilina commonly contains sulfur, to make the smoother, more homogeneous texture required by professionals.
It must be sealed prior to molding with a silicone rubber compound!!!