Hard Hat

Our Legacy

Metalcasting is one of the oldest manufacturing methods known to humankind and a very direct method of producing metal parts. The first castings can be dated back to ancient China in the 4th century B.C.

Over the years, the development of the metalcasting industry paralleled the American industrial revolution and foundries developed near growing settlements and cities nationwide. The American Foundry Society produced Spotlight On: Metalcasting, a documentary that aired on PBS in 2009. The five-minute documentary provides an overview of metalcasting and the importance cast components play in our society. To learn more about the history of foundries and metalcasting, visit American Foundry Society online. 

Learn how Waupaca Foundry has established a legacy of producing the highest quality gray, ductile, and high-strength ductile iron castings.



John Rosche started the Pioneer Foundry on the banks of the Waupaca River, just east of Main Street in the City of Waupaca.

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His son Fred Rosche partnered with H.H. Suhs to form Suhs – Rosche specializing in the manufacture of the Waupaca Chilled Plow, sleigh shoes, sash weights for windows, and the crusher jaws for use by the City of Waupaca at its stone crushing plant.

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60 Years in 60 Seconds: How Waupaca Foundry Began

Graduate metallurgist Clifford Schwenn turned his dream to reality when he acquired Waupaca Foundry in 1955. Where tourism once was the economic engine, see how Schwenn, Don Brunner and Otto Rusch built the foundry legacy in Waupaca, Wisconsin.

1900 - 1960

Circa 1900 - 1950

After the turn of the century, the foundry was sold to Leo Niemuth; then again to Charlie Dombrowski who ran the foundry until his death in 1955.

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Company was sold to Clifford Schwenn who changed the name to Waupaca Foundry, Inc. At this time Donald Brunner left Brillion Iron Works and joined Waupaca Foundry, Inc. as Plant Manager of Operations. Immediately a pattern vault addition was added to the plant.

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Waupaca Foundry was casting truck brake drums, heavy truck axle parts, water and air-cooled industrial equipment parts, wood and metal working equipment castings, electric motor housings, and parts for electric door openers. A 4-ton cupola with a 45-foot stack was constructed, operations were transferred to a new plant (now Plant 1) and the melting jumped to 30 tons per day.

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1960 - 1970


After successive additions, Waupaca Foundry was melting 78 tons per day with 150 employees.

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Waupaca Foundry poured 30 tons of gray iron per day at new east-side molding plant (now Plant 2). By the eleventh year, the company had grown to 200 employees and poured 100 tons of gray iron castings per day.

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Waupaca Foundry purchases and installs the first automatic vertical molding line at its Plant 1 foundry in Waupaca, WI. It is the first of its kind in the United States.

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Phillip W. Scott, President of The Budd Company in Troy, Michigan, announced that his company had acquired Waupaca Foundry, Inc. The move made Waupaca Foundry, Inc., a wholly-owned, independently operated subsidiary within The Budd Company automotive division.

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​​​An addition to the industrial park plant of Waupaca Foundry doubles iron casting production capacity at the plant. A conversion creates a 2-cupola operation and the plant becomes what is known today as Plant 2/3.

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1970 - 1980


Clifford Schwenn (pictured) retired and Donald Brunner then became President of Waupaca Foundry, Inc.

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Plans to build a new plant in northeast Wisconsin were announced. Plant 4 was constructed in Marinette, WI, and specialized in processes not available in previous plants. The Marinette facility was designed to melt 12 tons per hour.

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The Schwenn family donated the original plot of land where Pioneer Foundry was built to the City of Waupaca. The plot of land was turned into a city park.

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Thyssen, based in Düsseldorf, Germany acquired The Budd Company.

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60 years in 60 seconds: Don Brunner

Don Brunner built Waupaca Foundry when he, Clifford Schwenn and Otto Rusch purchased a single foundry located in Waupaca, Wisconsin. He was always trying to make Waupaca Foundry better. If one person can be credited with establishing the deep-rooted culture of continuous improvement and innovation; it was Don. If Don couldn't get it the way he wanted, he would do it himself. See how Don Brunner built a legacy and culture of innovation.

1980 - 1990


Donald Brunner (pictured) assumes role as Chief Executive Officer, while Gary Thoe is elevated to President and Chief Operating Officer of Waupaca Foundry, Inc.

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60 Years in 60 Seconds: A Culture of Ingenuity

Since 1955, Waupaca Foundry built a culture of ingenuity through ideas, dedication, and tenacity. With a team of 4,500 strong, Waupaca empowers its team to continuous improvement. Driven to succeed, we are Waupaca Foundry.

1990 - 2000


Kaizen training introduced at Waupaca Foundry, a program that brings together five or six employees from different departments as a team, to work on creative problem solving and new ways to improve production and the flow of materials.

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Construction began on Waupaca Foundry Plant 5 in Tell City, IN.

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Gary Thoe became President and Chief Executive Officer of Waupaca Foundry following the retirement of Don Brunner.

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The largest vertical molding machine in the world was installed at Tell City, IN. The machine was named “The Super Ox” and was designed and built by Waupaca Foundry employees. The addition brought the total number of vertical molding machines company-wide to 29, with a capacity of more than 380 tons per hour, making Waupaca Foundry the largest non-captive iron foundry in the world with more than 2,300 employees.

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60 Years in 60 Seconds: Gary Thoe

Retired CEO Gary Thoe started on the production floor and worked his way up at Waupaca Foundry, spanning a 50-year career. He is remembered most for how he made people feel.

2000 - 2010


​​Construction began on Waupaca Foundry Plant 6, located in Etowah, TN.

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Waupaca Foundry changed its name to ThyssenKrupp Waupaca.

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Annual revenue exceeds $1 billion USD.

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Gary Gigante is appointed President and Chief Executive Officer of ThyssenKrupp Waupaca.

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2010 - 2020


Production resumes at Plant 6 foundry in Etowah, TN; adds 20,000 sq. ft. of manufacturing space for ductile iron production.

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Private equity firm,​​KPS Capital Partners acquires ThyssenKrupp Waupaca. Upon closing, the Company was renamed Waupaca Foundry, Inc.

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Waupaca Foundry is acquired by Proterial, Ltd. (formerly Hitachi Metals). The post-merger integration creates a global leader that is well-positioned to capitalize on favorable megatrends in the industry by bringing together complementary product offerings, outstanding development capabilities, and leading technology that serve high-growth areas.

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President and COO, Mike Nikolai is named CEO. Thirty-five-year veteran, Gary Gigante retires.

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Operations expand into Michigan’s Upper Peninsula with the opening of a new facility located in Ironwood to process iron castings produced at its Waupaca, Wis. plants. Construction began in early 2019.

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Waupaca Foundry opens its second machining operation adjacent to its Plant 2/3 gray iron foundry in Waupaca, Wisconsin. The plant CNC machines brake components for the commercial vehicle market.

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2020 - Present


On January 4, 2023, the acquisition of Hitachi Metals, Ltd. by Bain Capital and other minor investors was completed and the new company, Proterial celebrated with a virtual Day 1 ceremony. Waupaca Foundry remains under Proterial ownership.

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Waupaca Foundry was sold to Monomoy Capital Partners on February 29, 2024. This new chapter brings operations excellence with a focus on investing and growing the iron casting supplier's commitment to its stakeholders.

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