by mike
(va.)
i have some 2-1/4" aluminum to butt weld. my machine is a miller 350 syncrowave.i would be greatful for any help you can spare
thanks, mike c.
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80/20 helium/argon if you are using a/c
preheat to around 200f
use as small a tig cup as will allow good gas shielding and use as little gas flow as will allow for good shielding.
you are definitely going to need a water cooled torch. and probably a 5/32 tungsten ceriated or lanthanated.
do you have a spool gun? cause thats a lot of welding.