18650 spot welding machine (NY-D01)

thingiverse

These are printed parts for a welding machine, this can be done from any box. Control board - NY-D 01/ Two transformers from a microwave oven 900 + 900 watts. There is an interface for continuous switching of transformers. There is an interface for serial-parallel connection of transformer windings (it is necessary to put vertical jumpers). This expands the scope of the device - high current! Wire 35 mm2, I made 4 turns on each. I put a thermal switch on the transformer and a cooling fan controller.