Unit Size Net Weight Pint Kit 2 lb Gallon Kit 18 lb Smooth-Cast¨ 380 is a filled, high density casting resin formulated for a variety of tooling applications. This no-odor resin features a convenient 1A:1B mix ratio by volume, a 6 minute pot-life and cure time of about 60 minutes depending on mass and temperature.Low viscosity ensures minimal bubble entrapment and long term shrinkage of cured resin is very low. Cured material is very strong and can be machined, drilled, sanded, etc. Color can be added with SO-Strong¨ color tints.PropertiesTechnical Properties Mix Ratio by Weight 1A:1B Mix Ratio by Volume 1A:1B Pot Life 6 minutes Tack Free Time 60 minutes Color Tan Shore Hardness 82D Mixed Viscosity 1,140 cps Shrinkage 0.00025 in./in. Specific Volume 15.9 cu. in./lb. Specific Gravity 1.74g/cc Tensile Strength 3,550 psi Elongation @ Break 1.43% Compressive Modulus 126,000 psi Tensile Modulus 490,000 psi Flexural Strength 4,870 psi Flexural Modulus 315,000 psi Compressive Strength 7,860 psi Heat Deflection Temp 125¼F How do I remove release agent from my cured urethane casting if I want to prime or paint the casting? Removing a silicone-based release agent from your cured urethane casting is not easy. The most effective way is to sand blast or bead blast the surface of your casting. However, sand blasting removes a micro thin layer of the castingÕs surface. If not done properly, you can damage or remove fine detail. Soap Wipe or brush the casting with a soap that has high alkali content. Cascade brand dishwashing gel is highly alkaline and also contains baking soda, which is an advantage. Solvents Wipe or brush the casting with Acetone, Toluene, Isopropyl Alcohol or Mineral Spirits. Important: follow all safety precautions when using flammable liquids. You can then prime and paint your casting.Media VideoDocumentation Technical Bulletin Related ProductsRELATED PRODUCTS: Ease Release 200
