/diy/ - Do It Yourself

>>159544
FYI, the stereo transformer is 560 watt and the MOT in the video is from a 960 watt microwave. My 3rd one, pictured here, is from a 1,450 watt microwave.

The 960 watt MOT performs very well as a MOT Spot Welder, but the duty cycle is very low. It has a single winding of 8-strand 10AWG wire as the secondary coil.

Post your MOT Welders, tips, pics, ask questions, etc.

I scored a massive 1.45KW microwave made in 1984 from a local thrift shop ($5). It had this massive transformer (it is bigger than my hand!) and a 2,000V 1μF capacitor. I've made 2 spot welder with smaller transformers (sources were a 540watt stereo and 960watt microwave). I was going to turn the MOT from the 960 microwave into an arc welder, but now I'm just going to use this one, providing that I get the coils off without harming the primary coil and I can get a new secondary on and nothing gets grounded out on the frame.