The resistance of the metal work pieces and the ... metal are sandwiched between the electrodes and power is applied. Spot welding isn’t just for joining two pieces of sheet metal.

As he notes in his writeup, the properties of copper which are most enticing, such as high thermal capacity, make welding it all that more difficult. His home-brew method of spot welding is ...

Resistance welding itself is known as a comparatively simple and efficient joining technique. An electrically conductive welding element made of carbon fibre is inserted into the joining zone, to ...