Time Traveler wrote:

Can you use a regular ac buzz box welder as a spot welder for sheet
metal.I plan to make a clamp with copper alloy electrodes.

Doubt it.

Anything
special with the electrics on a commercial model spot welder?

Yes, sadly.

What would
be the amperage to spot weld 1 mm sheet metal if my idea has merit.


Don't know, lots. Little spot welders just don't cost that much. The HF one
works, it just isn't as nice as a Miller. I have borrowed an HF spotwelder, and
I owned a Miller for awhile, that's how I know. You need a whole lot of current
for spotwelding, so unless you wanted to completely rewind the transformer on
that buzzbox I doubt it would work.

GWE