Riverstone Machining LLC

About Us

Riverstone Machining: Precision Crafted, Performance Delivered

Why Choose Us

Riverstone Machining is the ideal choice for anyone seeking precision machining services. With years of experience and a team of highly skilled professionals, Riverstone Machining consistently delivers top-quality products that meet the most stringent standards. Our state-of-the-art facility is equipped with advanced machinery and cutting-edge technology, enabling us to handle complex projects with utmost efficiency. We turn your vision into a reality!

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About Us

Riverstone Machining LLC is a family-owned, leading technical contract manufacturer of precision machined and fabricated components. Located in Fox Lake, Wisconsin, we have a long-standing reputation for delivering to customers across the region.

In 2010, Riverstone Machining purchased the assets of Integrity Machine Corporation, who had renowed  reputation of offering quality parts to customers throughout southeastern Wisconsin since 1995.  Our commitment to growth and technological advancement has been the driving force ever since.

In a significant expansion, we acquired Metal Solutions, Inc. in 2019 and began construction on a state-of-the-art 30,000 sq ft addition to our Fox Lake facility. Completed in 2023, this expansion brought our total operational space to 60,000 sq ft, allowing us to consolidate all production under one roof and enhance our efficiency.

Our capabilities were further expanded in 2025 with the addition of a new fabrication department. This strategic investment included a state-of-the-art 16,000-watt laser with automation, capable of cutting speeds up to 1,000 inches per minute on materials up to one inch thick. We also installed two new Amada brake presses with 140 and 240 tons of bending capacity.

Today, our team of thirty-five dedicated professionals operates across two shifts, utilizing the latest in advanced CNC machining technology. This commitment to cutting-edge equipment, combined with decades of manufacturing experience, enables us to meet any custom, production, turning, and milling needs with precision and reliability. At Riverstone Machining, we are dedicated to providing competitively priced, high-quality parts precisely when you need them.

Our History

Our Story

At Riverstone Machining, our journey began over 15 years ago with a commitment to precision and a passion for manufacturing excellence. We have grown from our humble beginnings into a premier contract manufacturer, building our reputation on trust, expertise, and a dedication to our customers' success. Our deep roots in the industry have allowed us to forge strong, lasting relationships with our customers, suppliers, and vendors, solidifying our place as a trusted leader in the field.

Our Capabilities: Precision Meets Versatility

We are your single source for the technical contract manufacturing of precision components. We specialize in working with a variety of high-performance metal substrates and crafting them into complex geometries. Our skilled machinists are meticulous, consistently holding dimensional tolerances to an exceptional +/-0.0001″.

In addition to our core machining expertise, we have recently expanded our capabilities to include comprehensive fabrication services. This integration of skills, including laser cutting and forming, allows us to provide a more complete manufacturing solution and streamline your supply chain.

The Riverstone Difference: Our People and Process

The true strength of Riverstone Machining lies in our people. Our highly trained staff brings incomparable knowledge and experience to every project. We believe that true partnership is built on collaboration, which is why we work closely with you to develop a custom manufacturing process that is precisely tailored to your project's unique needs.

We are equipped to guide your project every step of the way, from the initial prototype phase to full-scale market requirements. Our streamlined process ensures controlled costs and a consistent, high-quality output, allowing you to focus on your business while we handle the manufacturing with precision and care.

Get in Touch

Ready to bring your project to life? Contact us today to discuss how Riverstone Machining can be your partner in precision manufacturing.

“Our success is measured by the success of our customers”

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About Us

Our History

Riverstone Machining LLC is a family-owned technical contract manufacturer of precision machined components located in Fox Lake, Wisconsin. In 2010, Integrity Machine Corporation, who had a long-standing reputation of offering quality parts to customers throughout southeastern Wisconsin since 1995, was purchased and became part of the Riverstone family.

In November of 2019, the assets of Metal Solutions, Inc in Sun Prairie, WI were acquired and, within two years, construction on a 30,000 sq ft addition began on the Fox Lake property. The new manufacturing and office areas were unveiled in 2023, bringing our total square footage to 60,000. The Sun Prairie operation was then moved to Fox Lake to house all production operations under one roof.

Riverstone Machining LLC currently employs thirty-five people working two shifts daily. We provide a wide range of precision computer numerical control (CNC) machining and are equipped with the latest and most technically advanced equipment. This technology, coupled with decades of manufacturing experience, allows us the capability to meet any custom, production, turning and milling needs. We are committed to deliver competitively-priced, quality parts when you need them.

We're Hiring! Join Our Team.

Riverstone Machining is currently hiring for various positions. If you are interested in joining their talented team, you can easily apply online. Don't miss this chance to be a part of Riverstone Machining's growing team. Click the button below & apply online today!

Our Staff

Meet Our Team

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John Doe

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Jane Doe

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Frequently Asked Questions

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Hours & Location

Business Hours

Mon – Fri: 7:30 AM - 4:00 PM

Sat & Sun: CLOSED

Mailing Address

P.O. Box 126

107 Industrial Dr.

Fox Lake, WI 53933

Get In Touch

Phone Number

920-928-3771

We're Hiring!

Click below for more information

107 Industrial Dr, Fox Lake, WI 53933, USA

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