Waste mold as the term suggests, refers to a mold (mould) that has to be destroyed to get the cast. In other words, the mold can be used only once. In such cases, the mold is destructed by carefully chipping it from the cast. However, the term is also seen used contradictorily to refer to the mold made from a piece or a model. In such molds, the model is broken and destroyed from the mold, thus retaining the mold alone.