How To Rotocast Resin for Lightweight Displays
Step 3: Casting Foam‑iT 5
Now, Foam-iT!® 5 Parts A and B are measured and mixed. The expanding foam will be used to fill the hollow casting, keeping it lightweight and maintaining its strength. The Foam-iT!® 5 mixture is poured through the small hole in the casting. In a few minutes the Foam-iT!® 5 rises to entirely fill the hollow casting. Residual foam exits the top of the casting.
The cap board is removed exposing the residual foam. A saw is used to remove the residual foam. The mold and support shell are disassembled and the cured casting is removed.
