Is it reasonble to use Argon(75%)/CO2(25%) for TIG welding? I would
like to test the TIG feature on an old Miller 330A/BP (new to me) but
don't have the money for the Argon tank right now. I already have an
Argon/CO2 bottle from my MIG welder. Thanks, John
You might as well turn off the gas and strike the TIG. You will oxidise the
tungsten immediately. I don't think you will damage the equipment other than
eating a tungsten.
If all your doing is seeing if the TIG strikes and arc it will work. For
actually heating or welding something it won't.