Whetstone Machine Inc., based in Winona, MN, has been a trusted name in custom manufacturing since 1950. What began in the garage of our founder, Maynard Whetstone, has grown into a 56,000 sq. ft. state-of-the-art facility (and Minnesota’s tallest machine shop). Now in our third generation of family leadership, with Drew Gibson serving as Chief Operating Officer, we deliver quality solutions in CNC milling, turning, fabrication, and assembly. Over the decades, our capabilities have expanded to include advanced 5-axis milling, welding, powder coating, hydraulic pressing, and more.

We proudly serve industrial, automotive-supply, construction, and equipment companies across the Upper Midwest, routinely shipping to all 48 states, Canada, and even globally—reaching every continent, including Antarctica. Known for precision, efficiency, and on-time delivery, our team specializes in prototype machining, low- and high-volume production, and custom mechanical assemblies. At Whetstone Machine, we prioritize excellent service, competitive pricing, and quality results to help drive value to your bottom line.

Supporting our state-of-the-art operations is a dedicated team of 15 highly skilled machinists, backed by an experienced production and business office staff. Together, they ensure every project is executed with precision, efficiency, and the utmost attention to detail, maintaining the standards of excellence our clients have come to expect.