Jon got it right. The rule I use is, always put the work lead on the
work if at all possible. In addition to providing a better connection
for welding it will also keep the HF from biting you

Here's another even more important rule... If something's on fire,
don't knock it over. It's rarely advantagous to spread the fire over a
larger area. It is human nature to do this. Kind of like the instinct
to try to put out a fire with your foot.

Cheers,

Kelley

On Sat, 22 Nov 2003 21:36:11 -0600, Jon Elson
wrote:



V8TR4 wrote:
I don't understand what happened?


He said the HF on the TIG welder sparked to the can
and burned a hole through it. I really don't believe
that can happen. What I think happened is that the
contact between a metal welding table and the workpiece
was momentarily broken, perhaps when the piece rocked
from one contact point to another, and at that moment
the ground path back to the welder ran through the
spray paint can. That would SURE burn a hole in a
spray can! Even the HF would be able to ignite that!

Wow! That is a pretty spectacular incident, and it could
have been far worse.

Jon