SimonShabtai Evan wrote:

Harborfreight is selling a 220V one for about $150.
If you want precision timing on it I'll send you a schematic of the one
I designed/built for the welder.
Simon Shabtai Evan

Howard Eisenhauer wrote:
Anybody here ever built your own spot welder? I've got some major
re-assembly work coming up on my jeep tub & I've been thinking it
might be easier/faster to do real spot welds instead of the "drill
hole/mig weld plug/grind down" route. I've found a few references on
google to plans for units using re-wound microwave oven transformers,
intended for use on small projects such as model gas turbines, but
there isn't enough detail to convince me they'd work on heavier sheet
metal.

So, if you have any experience with something like this or know of any
on-line resources that google (Gasp!) doesn't know about I'd
appreaciate hearing from you.

Thanks,

Howard.

Could you also send me a copy of the schematic. I built a timer several
years ago, and would like to see what your approach was.