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Smooth-On Smooth-Cast 300 Liquid Plastic Compound Smooth-Cast 300

Quick Overview

  • Easy 1:1 ratio

  • Can be sanded, primed and painted

  • Quick cure time

  • 2 pint kit

Availability: In stock


2-3 Weeks


Perfect for pouring into a rubber mold. Quickly turns from a liquid to a solid, durable plastic. Ideal for duplicating a variety of original models or sculptures. The Smooth Cast 300 Series of liquid plastics are ultra-low viscosity casting resins that yield castings that are bright white and virtually bubble free. Vacuum degassing is not necessary. They offer the convenience of a one to one mix ratio (one part A to one part B by volume). The differences between them are pot life and demold time. Fully cured castings are tough, durable, machinable and paintable. They resist moisture and mild solvents. Applications for Smooth-Cast Liquid Plastics include reproducing small to medium size sculptures, cold cast bronze castings, making prototype models, roto cast pieces, special effect props and decorative jewelry. Net weight 32 oz. (909 grams). Technical Information Pot Life: 3 minutes Demold Time (depending on mass): 10 minutes Shrinkage: .005 in./in. Color: White Viscosity: 80 cps S.G. g/cm3: 1.05 S.V. cu. in./lb.: 26.6 Shore D Hardness: 70 Ultimate Tensile Strength: 3,000 PSI

Additional Information

Delivery Days 2-3 Weeks

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