The original model is a dried sea fan with delicate, intricate detail. It measures approximately 11'' H x 7'' D (27.94 cm H x 17.78 cm D). The side view of the dried sea fan model is approximately 0.04'' (1 mm) in thickness - very thin and delicate.
Two rigid boards of equal size are placed side-by-side so they form 1 board. The boards will be used as a working surface and to create a rubber hinged mold. Center the fan model on the right half of the board and draw 2 dots on the outer top and bottom corners of the boards to designate the outer perimeter of the rubber mold. Re-center your model on the left half of the board and draw 2 additional perimeter dots on the outer top and bottom.
Because the sea fan has such fine, intricate detail, Ease Release 200 spray release is applied to both sides until all detail is covered. This will ensure that the rubber mold releases easily from the sea fan. Cover the boards with wax paper. This will make the silicone putty easier to handle.