wrote in message
...
I don't have much experience spot welding. I am looking at an
assembly
that is made from 3 laminated pieces of 1/8" mild steel. Since I
designed the assembly I can choose the fastening method and was
wondering if the parts could be reasonably spot welded together. The
assembly process would be to first weld two parts together and then
weld the last part to the now 1/4" thick assembly. I am also
considering blind rivets and screws. But spot welding would obviate
any drilling or tapping. And I was thinking someone here would have
the practical experience to let me know if this scheme of mine is
practical.
Thanks,
Eric

I think the floor-mounted spotwelder I used when learning to design
and build machines could be turned up to handle steel as thick as 12
gauge, nearly 1/8". You could simulate spot welds by filling punched
holes in the top sheet with MIG.

The process is imprecise and may be restricted by the bulk of the
electrodes.
-jsw