Self-hardening, 2 part product (A & B) must be mixed thoroughly. Putty like feel. * Offers economy as well as performance, strength and waterproof permanence. Freeze-thaw stable. • Flat to semigloss finish to make repairs and painting easier. * Open working time about 2-3 hours. Cures hard overnight (24 hour full cure). • 0% shrinkage. • Strongly adheres to almost any clean surface . . . including ceramic, fiberglass, foam, glass, metal, plastics, resin, stone, wood, and more. * Can be seamlessly feathered before set-up, or sanded, tapped, lathed or otherwise tooled after. • User friendly clay. Non-flammable, non-hazardous. No solvents or fumes. Conformsto ASTM D.4236. * Clean up with Apoxie�� Safety Solvent or water.