Private equity firm buys Dahlquist Machine Plastics News Report Dahlquist Machine Inc. Dahlquist Machine Inc. has a new private equity owner. Chicago-based Core Industrial Partners announced the acquisition of the machining company Dec. 21. Ham Lake, Minn. — Dahlquist Machine Inc., a Ham Lake company that specializes in high-speed machining of light metal, aluminum and plastic, has a new private equity owner. Chicago-based Core Industrial Partners announced the acquisition Dec. 21. Terms were not disclosed. Dahlquist focuses on the medical device and laboratory testing equipment sectors, and also serves the electronics, instrumental and industrial end markets. The company was founded in 1969 and has more than 30 computer numerically controlled mills and lathes.