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. These resins readily accept fillers and can be colored with urethane tints or pigments (Smooth-Cast™ 325 series accepts pigments better than the Smooth Cast™ 300 series). Fully cured castings are tough, durable, machinable and paintable. They resist moisture and mild solvents. Applications for Smooth-Cast™ 300 Series Liquid Plastics include reproducing small to medium size sculptures, making prototype models, special effect props and decorative jewelry.
Those interested in making roto cast pieces should refer to the Smooth-Cast™ 65D technical bulletin.
Data At-A-Glance
| Mix Ratio By Volume | 1A:1B |
| Mix Ratio By Weight | 100A:90B |
| Pot Life | 3 minutes |
| Cure Time | 10 minutes |
| Shore Hardness | 70 D |
| Color | White |
| Tensile Strength | 3,000 psi |
| Elongation @ Break | 5 % |
| Compressive Modulus | 45,800 psi |
| Specific Gravity | 1.05 g/cc |
| Specific Volume | 26.4 cu. in./lb. |
| Tensile Modulus | 139,500 psi |
| Flexural Strength | 4,510 psi |
| Flexural Modulus | 128,000 psi |
| Compressive Strength | 4,000 psi |
| Heat Deflection Temp | 120 °F |
| Shrinkage | 0.01 in. / in. |
| Mixed Viscosity | 80 cps |
More Prop 65 Info