... , large statues, duplication of cultural relics, shoe sole mold fabrication, pad printing positioning, shock resistance for electronic equipments ... we didn't handle the model mold (product mold) properly. Before mold making, the model mold has to be sanded and polished ... another silicone rubber), the outer mold can be made of gypsum, fiberglass reinforced plastics (unsaturated resin plus glass fiber ...