Smooth Cast 65D

SKU: 796305

Size: Pint Kit
Sale price$27.95

unit(s) in Stock.


unit(s) in Stock.


unit(s) in Stock.

*Price and availability may vary.


Unit Size Net Weight
Pint Kit 1.9 lb
Gallon Kit 15.4 lb
Five Gallon Kit 77 lb



Smooth-Cast 65D (formerly ROTO) is a low viscosity, mercury free liquid plastic that gradually builds thixotropy (becomes thicker), making it ideal for rotational casting applications. Castings will be hollow and lightweight but have the appearance of being solid, allowing you to use less material to attain the same finished look.
Smooth Cast 65D can also be cast solid for a variety of industrial and art-related applications. Fully cured castings are semi-rigid and exhibit good impact resistance. Castings resist moisture and mild solvents and can be machined, sanded and painted. Color effects are possible by adding SO-Strong and UVO Color tints. Smooth Cast 65D is ideal for making hollow rotationally cast parts.
Technical Properties
Mix Ratio by Weight 100A:93B
Mix Ratio by Volume 1A:1B
Pot Life 2.5 minutes
Cure Time 15 minutes
Color White
Shore Hardness 65D
Mixed Viscosity 120 cps
Shrinkage 0.01 in./in.
Specific Volume 26.4 cu, in./lb.
Specific Gravity 1.05g/cc
Tensile Strength 2,400 psi
Elongation @ Break 20%


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.
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