This mold making material is both strong and flexible. EasyMold silicone rubber has an extended working time of one hour and cures over a twenty-four hour period. This self releasing silicone rubber does not shrink once cured. Wonderful at capturing fine detail, Easy mold silicone rubber is categorized as food-grade safe so it can be used in some baking applications (can be heated up to 400F/204C) Suitable for use with: plaster, plaster mixes, concrete, wax, soap, low-melt metals, chocolate, ice cubes, resins and air dry clays.