- 1). Build a wooden frame with a wooden bottom large enough to elevate the stones 1/4 inch and support the mold. Add an additional 1 inch to the frame for the mold edges. Seal the seams of the frame with silicon caulk before pouring the mold. Allow to dry.
- 2). Seal the stones to be reproduced with a stone sealant used on stone floors and concrete. Allow to dry completely. Spray the stones with a release agent in order to facilitate easy removal from the mold.
- 3). Apply epoxy glue to secure the stones together into the desired design. Allow the epoxy glue to dry completely.
- 4). Spread a bed of clay in the bottom of the wooden frame. Place the stones in the clay. Leave 2 inches of the stones showing above the clay. This will form the front of the stone veneer.
- 5). Mix the silicone rubber mix according to the manufacturer's instructions. Pour onto the stones in the wooden frame covering the stones completely plus 2 inches.
- 6). Allow the silicone rubber to cure to a solid form in a well-ventilated place overnight.
- 7). Remove the rubber veneer mold carefully from the stones so as to not tear the mold.
- 8). Allow the stone mold to dry for another 24 hours before casting the mold.
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