gazim,
Don't know a lot about the co2 running cooler.
I'll ask my welding supplier about it. I run
the argon mix on all the steel welding migs in
my sheet metal/steel fab shop because it's a little bit better quality and cleaner weld. It's been so long since I welded with straight co2 I forgot what it's like. I do know of other local professional shops that use straight co2...just a matter of preference I guess.
To be honest, when I weld in patch panels I would most likely tig them or even gas weld them
(oxy/acy) because I have that stuff available to me. The key to keeping heat warpage down when migging panels is very small tack welds and skipping around a lot. Resist the urge to run longer beads.
