In the video, one can see how [Finn] uses thermite charges to weld massive copper conductors together in a matter of seconds inside a graphite mold. Straight joints, T-joints, and others are a ...

Discarded 1.5-volt batteries can do more than you think! By assembling a simple yet effective welding machine, copper wires can be soldered, and even iron and stainless steel can be welded with ease.

The ball bearings hammer the copper into the part, cold welding it to the surface. [Robert’s] first attempt didn´t work well as the copper didn’t stick well. He solved that by dipping the ...

The ability of new blue-light semiconductor lasers to better perform precision cutting, patterning or welding of copper will make electrical and electronic component manufacturing cheaper and more ...