Resin Casting Forums » General Discussion

**Cold cast Bronze** Posted: 5/7/2011 11:22:14 AM

Using polyester resin or polyurethane resin as the binding material it is possible to produce realistic "cold cast bronze" objects or sculpture.

Process the bronze first. Put bronze powder into a metal container and place this container on a high gas flame. Constantly stir the bronze powder to prevent the bronze from forming lumps. As the heat builds the bronze will start to turn dark brown or blue black. This oxidisation of the bronze powder, produces a good antique finish to a casting.

Method 1. using polyester laminating resin rather than gel coat resin produces a better bronze finish. mix the bronze powder into the resin until it is of a single cream consistency. catalyse the resin and brush or pour and roll cast this mixture into the mould until the whole surface is covered allow to set. Fill laminating resin with a filler powder and pigment with a black pigment designed for the resin. Catalyse this resin mixture and back pour this resin behind the bronze filled resin and allow to cure. Remove the cured casting from the mould and burnish the surface with course wire wool.

Method 2.this method uses 1/10 of the bronze of the first method, with no difference to the look. pour bronze into a silicone mould the empty the bronze back out. the bronze will stick to the surface. Ensure all loose bronze is empted from the mould or it will cause a blank in the detail. Mix laminating resin with a filler powder and pigment black. Catalyse the resin and pour this mixture onto the bronzed silicone. De-mould once cured and burnish with course wire wool. Resinwizard.

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Cold cast Bronze

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