Smooth-Cast 300 is an ultra-low viscosity casting resin that quickly cures to a solid, durable, bright white plastic which is virtually bubble free. Hardness is Shore 70D. Applications include small to medium size sculptures, prototype models, cold cast bronze, special effect props, decorative jewelry, and more. Pot life is 3 minutes. Cure time is 10 minutes. Once fully cured, the casting are paintable. - Smooth-On Smooth-Cast 300 - GallonSMOOTH CAST 300 GAL-2PT -