Reddit reviews Magic Sculpt 5 Lb. Epoxy Clay - Black

Non-hazardous, non-flammable; no solvents or fumes0% shrinking & crackingPutty-like, smooth consistencyExcellent adhesion to clean surfaces wood, metal, ceramic, fiberglass, foam, glass, plastics, stone, and more!2-3 hour working timel Self-hardening; no ovens, kilns or fumes