Lost-wax metal casting in which the model that is "lost" is not the original model, but a wax cast from a piece mold taken from the original model. This second wax model is sometimes called an indirect casting, or an intermodel. If the indirect casting is hollow, a core is pored into it. The ancient Greeks developed this method of casting.Indirect casting has numerous advantages because it: ensures an even wall of wax. ensures an even wall of metal. enables repairs to be made if part of the cast is defective. enables another version to be made if the whole cast fails. permits the multiple edition of a sculpture, because the original model is preserved. Indirect casting was rediscovered during the Renaissance.