Quote:
Originally Posted by Bill Douglas
Got to have gas, be it argon or co2, or a mix. And as mentioned do lots of practice on thin metal and look at lots of youtubes on the subject. And once the machine is setup right you'll be fine 
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yeah except for the paint... The heat will kill your paint. Can't you just grind the damaged paint off and rattlecan something close?
I use centra-shield s-6 wire (0.23) which is ER70S-6. Compared to the rusty unknown stuff that came in my used mig the s6 is magic. I can weld through rust and paint. It scrubs the surface clean and boils the impurities to the edge. Shockingly good. So long as I flow gas while it cools I up with shiny beads (above was with the old nasty wire). I need to weld-thru-metal primer the beads in minutes though or they'll oxidize.