PlatSil 73-29 is a 1A:10B mix, mid range hardness (A~30), low viscosity, platinum silicone mold rubber. Great for making molds for all types of resin casting (polyurethane, polyester, epoxy) and foams without release agents. Used for prototyping, model making, hobby reproduction, taxidermy, soap and candle making and much more. Easy-to-use, long mold life, high-performance and no shrinkage on cure. Pour as supplied or thicken for brush-on molds using PlatThix liquid thickener.