Academy of Art University sculpture student Cameron Jones recently photo-documented the creation of a wax copy from his 24-inch ‘machine-age’ écorché sculpture, which he wants to ultimately cast in bronze. He’s shared the photos and provided some descriptions below, which we’ll update once the bronze is finished!
1. Laying the bed of clay out that surrounds the sculpture.
2. The bed of clay creates a final parting line which follows the general apex of the sculpture from front to back. A wax barrier surrounding the piece will contain the rubber to be applied.
3. A second coat of silicone rubber is applied.
4. Gauze is laid between the third and fourth (and final) coat to add thickness and structural stability.
5. After the silicone has cured and the wax barrier has been removed, a wall made of clay and wood is constructed for the framing of the mother mold. Depressions are made within the clay bed which will later be used to line up the two halves.
6. First half of the mother mold completed using Hydrocal.
7. Écorché standing with the first half of the mother mold. Keys protruding from the walls and armature are still attached to the sculpture.
8. Preparing for the second half of rubber using the same technique as before; wax barrier for rubber containment, parting line (this time defined by first half of rubber instead of clay), and additional gating system added for optimal casting and venting. Armature pipe has been cut, removed, and plugged.
9. Mold cracked open after second half of rubber and mother mold have been completed and cured.
10. Silicone and mother mold removed from back side of mold to expose wax copy inside.
11. View of entire mold opened up to see negative impression made by silicone rubber held within a Hydrocal mother mold. The first wax copy of the écorché stands in back.
12. Free standing wax copy of 24-inch écorché sculpture, included with gating system.