INSERT MOLDING Benefits of Insert Molding Insert Molding, sometimes called overmolding, can be a very efficient method of building a thermoplastic assembly that requires metal parts, bushings, metal stampings or electro-mechanical parts to be inserted into an injection molded component. As a manufacturing option insert molding typically reduces labor cost, costs associated with fasteners or adhesives, system weight, and overall performance of the assembly. Based in Pittsfield Massachusetts, Cavallero plastics has extensive experience in both the design and manufacture of insert molded assemblies. Let our engineering team advise you on this cost effective manufacturing option.