Life hack-Spot welding View this video on YouTube youtube.com / Via youtube Spot welding with his own hands. Made from burnt-down welding transformer.Description:1. Was welding transformer (conventional arc welding) with the burnt secondary (welding) winding.2. I reeled off a burnt-out secondary winding and in its place put its secondary winding (one coil a 110 sq. mm cross-section consisting of two parallel conductors). Such a winding is very low voltage (about 2 Volts), but she has a huge current (about 500 Amps!).3. Therefore, the transformer turned into a spot welding transformer.