OVERMOLDING Design with Overmolding Overmolding, sometimes called insert molding, is a cost-effective method of manufacturing assemblies that require metal parts, bushings, metal stampings, grommets, connectors, or other mechanical parts to be inserted into an injection molded component. A design that uses overmolding will typically reduce production labor, costs associated with fasteners or adhesives, system weight, and overall performance of the finished product. Based in Pittsfield Massachusetts, Cavallero plastics has extensive experience in both the design and manufacture of overmolded assemblies. Let our engineering team assist you in the use of this efficient manufacturing option.