How To Make a 2‑Part Mold of an Architectural Bracket
Step 7: Creating Mold Box Lid
A mold box lid is constructed to contain the silicone rubber. The lid is reinforced with wood to provide additional support. Channels are routered into the mold box lid to function as a registration key for the rubber mold. Vent holes are drilled to allow air to escape as the mold box is filled. Additional wood is cut and attached to complete the mold box.
