BTD Manufacturing 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, mass transportation, and recreational vehicle industries, mainly in the Midwest. Major clients include snowmobile maker Arctic Cat, lawn equipment giant Toro, and farm equipment manufacturer Case. BTD is a wholly owned subsidiary of Otter Tail Corporation.