 Simple molds, used by the Greeks of the continent until the 4th century BC, are simply dried.Bivalvular molds, borrowed by the insular Greeks from the Egyptians, require cutting to obtain an obverse and a reverse, with which "keys" are sometimes associated protuberances allowing the two parts to fit better.When the piece becomes complicated, with important projections (arm, legs, head, clothing), the craftsman can cut out the mold in smaller parts.