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A Company Dedicated to Excellence and Reliability

Serving Manufacturers Throughout the Midwest and Beyond

Custom Production Grinding provides high precision grinding and honing of cylindrical parts, and surface grinding, for original equipment manufacturers (OEMs) and other companies in the Midwest and beyond.

The company was founded by Richard and Betty Marx in 1983 and quickly became known for its consistent high quality and on-time delivery. Services were expanded over the years, but the company never lost sight of its vision of producing high quality parts and reliable CNC precision grinding services at a fair price. 

Diverse Industries Rely on Us

Major national OEMs with headquarters or operations in the Midwest and beyond, and other machine shops, recognized that value, and soon became regular customers of Custom Production Grinding. The companies, in industries such as automotive, agriculture, fluid handling, marine and metering, as well as other machine shops that need to subcontract grinding of parts to extremely tight tolerances.

Company Acquired in 2021

A new ownership group acquired the company at the start of 2021 – remaining committed to the vision and to further enhancing the company’s capabilities and service area. As we grow under our new ownership, our 33,000-square-foot facility gives us the space needed to immediately accommodate larger operations, and have plans to significantly expand the business.

Easy Access for Manufacturers

Our location is conveniently close to Interstate 41/U.S. Highway 45 – providing efficient access to manufacturers throughout the metro Milwaukee area, southeastern Wisconsin, and elsewhere in the Midwest and beyond.

Our leadership team includes long-term professionals Tom Amherdt, president; Greg Schoepke, CFO/controller; and Paul Champeau, general manager.

We are members of the Tool, Die & Machining Association of Wisconsin.

See our Google My Business page.

CPG News

New Company President

Tom Amherdt has joined the Custom Production Grinding ownership group and has been named president of the company, bringing valuable leadership and manufacturing skills to the business. 

Read More About the New Leadership.

New Ownership Group

Blackwell Capital Group LLC, has acquired Custom Production Grinding. As part of the acquisition and growth plan, Custom Production Grinding has unveiled a new brand and a new website to display its capabilities.

Read More About the Acquisition.

Let Us Be Your Strategic Partner

“We have been doing business with CPG for more than 38 years. They have been a strategic part of our supply chain since they opened. They are easy to work with and extremely accommodating to our due dates, with quick turn around times. They produce quality parts and have great attention to detail.” – CPG Customer > See More Testimonials.