Soft Soap release agent is used between plaster and plaster, when making plaster casts from a plaster moulds, typically in pottery and ceramic applications. Watered down and applied in layers until a smooth surface is achieved.
Mix 50% boiling water to 50% Soft Soap and allow to cool before use. Apply approximately three times by brush or sponge, wiping the soap off carefully with a sponge and allow to dry after each application.
Also known as Mould Makers Size. Soft Soap is a non-hazardous composition of potassium soap and vegetable oil.