Mold Making Tutorial: How to Make a Cavity Pour Mold

Making a Cavity Pour Mold with Mold Max 30 RTV Silicone Rubber from Smooth-On. Our model is a hand-carved hard wood 3-dimensional figure. Drill an air release hole in to the middle of a baseboard. Secure model to baseboard with screws. Apply plastic wrap to the original model to protect the surface. Cover the model with 1/2-inch (1.3 cm) clay blanket. Create a 2-inch (5.1 cm) flange for registration. Build a 3-inch (7.6 cm) clay dividing wall and apply clay supports. Drill indentations in the baseboard to