Unitek Multi Pulse Spot Welder

Great for welding metal other than brass or copper (has to be metal of high electrical resistance). 2 ranges, 0-10 and 0-50 Watt-Seconds. I have been able to weld a hairspring but not sure it would be feasible. Can weld small mainsprings in the pocket watch and desk clock but why bother unless there's no other way.

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