Composite, Fiberglass & Reinforced Plastic Molding

Composite Fiberglass Reinforced Plastics (FRP) Are Used in a Variety of Products and Industries

Offering a wide range of fiberglass molding processes, MasterMold – and its experienced staff of engineers – has the ability to meet all of your composite needs from prototype or low-volume production to high-volume production.

This depth of capability, combined with cutting-edge equipment and facilities for machining, bonding, painting, and final assembly, yields a greater range of available manufacturing services for our customers. More options provide greater possible solutions, convenience and cost savings.


By molding an RFID tag into your part, our system will be able to tell you what temperatures your part is molded at, the pressures used, cycle times as well as other details in the molding process.

Molding Services

Compression Molding

Compression molding uses sheet molding compound (SMC), bulk molding compound (BMC), or carbon fiber in a thermoset process to produce greater a strength-to-weight ratio over steel and aluminum parts.

Open Molding

Open molding – or hand lay-up/spray-up molding – is a cost-effective solution for lower volume/larger structural parts that still require complexity and a finished outside surface.

Preform Molding

Preform molding offers excellent mechanical and structural materials with flexible properties. Preform molding also boasts similar performance characteristics to compression molding.

Prototype Molding

MasterMold helps turn your concept into reality with custom molds, models and prototype parts constructed from fiberglass, epoxy, wood, or other materials that best suit your needs.

Few companies in the fiberglass molding industry can match the variety of composite molding technologies available at MasterMold.

Request a Factory Tour

Would you like a factory tour of any of our facilities? Contact us by either filling out the online contact form or calling our headquarters in Johnson Creek, WI: (920) 699-2711.