Runt of the Litter Rubber mold coating over plasticine model Rubber mold with parting lines Silicon reinforcement along seams Plaster mother mold over rubber Plasticine model emerging from mold layers as they are cut open Molds pieced together once plasticine model is removed Filled with wax Wax cast revealed Wax submerged in packing sand in preparation for casting sand layer Solidified casting sand half Preparation for second half of casting sand Wax melted out of casting sand molds