Making a Silicone Rubber Mould.
First Half of Mould
|The first stage of making a silicone rubber mould of your sculpture is to build up clay to the halfway point.|
|Around the edge of your sculpture poke some shallow rounded holes to key the joins of your moulds.|
|Roll out some clay ¼" thick. Cut strips of this clay 1" wide, From these cut out dovetails and lay out around the sculpture keeping them ½" away. These dovetails will hold the rubber in place when making your resin composite reproductions.|
|Cut out Dovetails.|
|Then with brush on a thin layer of mixed silicone rubber liquid. Let dry between coats. Build up at least 3 layers or more. Add a thickened layer of silicone rubber at least ¼" thick. Let Dry.|
|The silicone is now ¼" thick all over the sculpture and is now ready for the next stage.|