How To Make a Metal Cold Casting With Smooth‑Cast™ 325 Resin

Step 1: Preparing Mold

To start Smooth-Cast® 325 casting resin, SO-Strong® Black tint and Bronze powder are combined to make a ''Cold Cast'' Bronze Casting. Any metal powder (-325 mesh) can be used including copper, brass, nickel/silver, etc.

The mold for this piece is made from OOMOO® 30 silicone rubber. By using Mann Ease Release® 200 the mold will provide a clean release of the resin. Using release agent will also extend the life of a silicone mold. Spray a light coat of Ease Release® 200 into the mold. Brush the release agent into all corners of the mold and follow with another light spray coat.

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