How We Made a 30CM Lady Justice Silicone Mold with a Support Shell
The G6003 project is a large Lady Justice bust mold built as a flexible silicone inner mold with a rigid support shell. The finished casting shown here is approximately 30 × 20.3 × 19.7 cm. This workshop record follows the real supplied video rather than presenting a universal formula. Why the support shell matters A large flexible mold needs stable external support during pouring and casting. The rigid yellow shell keeps the silicone inner mold aligned and helps the assembly hold its intended shape. Binder clips secure the shell sections while still allowing the mold to be opened for demolding. 1. Seal the bottom edge The bottom edge is sealed with double-sided tape before pouring. This creates a practical first barrier against leakage at the base of the mold assembly. 2. Start with a small silicone pour The recorded process begins with a small first batch. Keeping the initial liquid level low reduces pressure at the bottom edge while the seal is checked. 3. Complete the seco...