Moulds are made with POP (Plaster of Paris) mixed in water. This liquid is poured in the gap between the ‘master copy’ and a plain POP cylindrical mould. A coat of oil and soap solution is brushed on each surface to prevent sticking. The POP that gets poured takes the shape of the master copy from the inside and remains plain outside. This mould is usually made in parts-that-make-up-a-whole to eventually make the clay-cast easy to remove. Many moulds are prepared for one type of product to make production faster.
