I just got a new mig welder, a Hobart 180, and have been doing a little stuff with it around the shop. I've stick welded for years and I have to say I do like the ease of this mig stuff.
Anyway a feller at work, who does a fair bit of welding of his own and got me to get my own mig, says he uses straight Argon on his mig so that he doesn't have to keep different gases around to switch between welding aluminum or steel.
Now I know mig is suposed to be CO2 or C25 on steel, but he says he just uses argon and his weld puddle is more diamond shaped than round with argon but that it works fine. It is an attractive idea if it really works.
Has anybody else heard this? Any of you mig gurus tried it? how did it work out and what did you have to adjust to make it work (faster or slower feed rate, higher or lower flow rate etc..)???
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