On Sat, 24 Apr 2004 07:18:14 -0400, "Backlash"
wrote:

Eric, The capacitive discharge unit is a factory built unit. I drug it out
of a storage barn at work and put it into action about 10 years ago. It uses
vacuum tube technology to load and discharge a bank of caps through the
tips. I can get the model number and such if you want, but I'm pretty sure
it's now considered obsolete.
I had a similar experience to yours. I needed to externally swage some
.065 stainless steel tubing with a .002 wall thickness down to .035
thousandths for a length of 1/8". Torrington Swager Co no-quoted the tooling
and said they wouldn't touch the job. I took two small blocks of tool steel,
clamped them in the mill vise, and drilled a hole on the parting line of the
blocks. Deburred with a beadblaster, hardened them, polished the bore, and
installed them and went to swaging. They are theoretically supposed to have
all kinds of reliefs ground into these type blocks to make them work, but
these have been turning out thousands of parts a year for about 10 years.
Reality versus perception, I guess.

RJ
Well, thanks anyway. Guess I'll look into this type of spot welder and
see if I can build one.
ERS