Permoplast Modeling Clay 1lb acr or any other silicone based

or any other silicone based release agents

but require an additional paint or UV filter coating for ultraviolet protection

Pouring Around An Object - Once mixed

releasing urethane foam from urethane rubber)

Permoplast Modeling Clay 1lb acr or any other silicone basedSince 1919, Permoplast has remained the standard for premium, non hardening modeling clays. Ideal for students at all grade levels. Develop small motor skills and hand eye coordination with our classic non toxic, non hardening clay. Students and claymation filmmakers like Art Clokey created original characters (Gumby and Pokey) for mixed media art projects with our Permoplast clay.