What started in 1979 as Bismarck Tool & Die didn't die at all; it lives on today as BTD Manufacturing. The company provides metal fabrication services for custom machine parts and metal components through stamping, tool and die, machining, tube bending, welding, and assembly. BTD offers design, engineering, prototyping, and short-run functions. It serves customers in the agricultural machinery, appliance, health and fitness, lawn and garden equipment, and recreational vehicle industries, mainly in the Midwest. Major clients include snowmobile maker Arctic Cat, agricultural equipment manufacturer AGCO, and power plant construction firm Siemens Energy. BTD is a wholly-owned subsidiary of Otter Tail Corporation.