A high quality Mould makers size also known as soft soap used in the production of plaster moulds to prevent sticking of the two plaster surfaces. Mix half/half with boiling water. Allow to cool; apply with a brush; wipe off excess with a natural sponge. Apply 3 coats, allowing to dry between each application. Remaining soft soap can be stored in an air tight container for use at a later date.
4 in stock