901 Geneva Parkway N

Lake Geneva, WI 53147 USA


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Plastic Injection Molding for Wisconsin

For over 40 years, Midwest Precision Molding (MPM) has served as Wisconsin's leading provider of plastic injection molding. If you can dream it, we can create it. Our Lake Geneva facility is home to some of the most dynamic equipment arrangements in the Midwest; including over 40 injection modeling machines, 11 new Sodick presses, and new automation equipment. 


When it comes to custom injection molds, we're your people. At MPM, we specialize in creating top-of-the-line gear, insert, and bobbin molding. We are Wisconsin's only true custom molder focused on tight tolerance and precision plastic parts. From initial design to post-production, our team is here to guide you every step of the way. There is no project too small or too big. Our onsite tool room is ready to create your plastic injection mold on time and propel your business or project forward. 

Message us today to receive your personalized quote!

What's New with MPM Plastics?

MPM Plastics Honored As a Future Top 50 Company

MPM Plastics Honored As a Future Top 50 Company Midwest Precision Molding (MPM Plastics) is proud to announce its recent designation as a 2022 Future 50 company by BizTimes Media in partnership with the Metropolitan Milwaukee Association of Commerce. The Future 50 program, now in its 33rd year, recognizes privately-owned companies in the Milwaukee region that

MPM Plastics Grows Business and Expands Capabilities

MPM Plastics Grows Business and Expands Capabilities Midwest Precision Molding (MPM Plastics) has been a leading provider for plastic injection molding for over 40 years. On January 1st, 2021 Midwest Precision Molding was formed by combining Tri-Tec Corp and Plasti-coil, two longstanding plastic manufacturers. The company specializes in gear molding, insert molding, and bobbin molding, they

Plasti-Coil Makes The Name Change To Midwest Precision Molding (MPM Plastics)

Plasti-Coil Tri-Tech Corporation has undergone a complete rebrand and changed its name to Midwest Precision Molding (MPM Plastics). This change was made effective on January 1, 2021. Wisconsin’s leading provider of plastic injection molding for nearly 40 years, MPM Plastics is excited to continue its tradition of excellence, precision and client satisfaction in the great

Wisconsin Plastic Injection Molded Medical Gears

Tri-Tec Corporation is a leading producer of plastic injection molded medical gears in Wisconsin. We specialize in custom molded plastic parts, including the design of plastic molded parts, production of these parts in Tri-Tec’s plastic molding facility. Our team of experts works to ensure proper optimization of gears and precision component parts.

Coil Winding Bobbins Example - Plasti-Coil

Coil Winding Bobbins

Since MPM Plastic's beginning, coil winding bobbins have been at the core of our business. Partnering with hundreds of manufacturers over the years has elevated us to “Experts” in the realm of custom bobbins. Read More....

Terminal Pin Insertion Example - Plasti-Coil

Terminal Pin Insertion

At MPM Plastic, not only do we produce millions of plastic injection molded bobbins annually, but provide many secondary operations such as terminal and pin insertion. We operate many specialized machines that makes this process possible. Read More...

Insert Overmolding Example - Plasti-Coil

Insert Overmolding

Plastic insert molding is a custom molding process where plastic is injected into the mold to encapsulate (either fully or partially) a part that was placed into the mold just prior to the injection of plastic. Read More...

Custom Molded Plastics Example - Plasti-Coil

Molded Plastics

At MPM Plastic, “custom” is an everyday term in what we achieve for our customers. When it comes to custom plastic molders, we are simply the best!