Smooth-Cast 380

High Density Urethane Tooling Resin

Smooth-Cast® 380 is a filled casting resin formulated for a variety of tooling applications. Its low viscosity ensures minimal bubble entrapment and the long term shrinkage of cured resin is very low. This material is very strong and can be machined, drilled, sanded, etc. Perfect for high density tooling it also offers excellent compressive strength.

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Smooth-Cast 380

Medium-setting beige liquid plastic.
How Does It Work?
WARNING: Prop 65 Notice
WARNING: Known to the state of CA to cause cancer, birth defects or reproductive harm - www.P65Warnings.ca.gov
 Trial Unit 2 lbs. 23773071
Gallon Unit 18 lbs. 1129014587

Document Downloads

Technical Bulletin

Safety Data Sheet

Images

Smooth-Cast 380 Image:
© 2025

Bird house casting made with SmoothCast® 380.

Smooth-Cast 380 Image:
© 2025

Tooling made of SmoothCast® 380 used in vacuum bagging application of a Carbon fiber part.

Smooth-Cast 380 Image:
© 2025

Frank Ippolito hand casting made of SmoothCast® 380 in Mold Max® 30 silicone mold.

Smooth-Cast 380 Image:
© 2025

Custom Model 1911 pistol grips by Martyn Engraving. Grips were cast in SmoothCast® 380 into Mold Max® 14NV silicone molds. You can see more of Martyn's engraving work at https://www.facebook.com/MartynEngraving

Smooth-Cast 380 Image:
© 2025

Tooling made of SmoothCast® 380 used in vacuum bagging application of a Carbon fiber part.