MOT Spot Welder

Home-built spot welder using high power microwave oven transformer (MOT) from salvaged microwave oven.

media: MOT, 2-gauge cable, copper rods, MDF and pine wood frame

Completed spot welder with control switch

MOT housed inside wooden frame

Detail on MOT. Chiseled out high-voltage secondary winding and replaced with heavy-gauge low-voltage high-current cable

MOT with 2-gauge cable

Broken microwave from which MOT was salvaged from

---

Back to Projects