My only real experience welding in my life has been Mig welding exhaust. It doesn't get any easier! I decided that I wanted to do some panel replacement so I bought a 110V unit for myself. First car went pretty good with a flange joint. I read about butt-welding. Hey, let's try that now...so I did. My FIRST butt-weld may not have been a professional quality butt weld, but there was virtually NO warpage and I have WAY less clean-up to do (grinding wise) than when I was flanging my joints.

I don't know if it wound up in the archives here, but one of the members did an AWESOME job of explaining how to do it, and by simply following their instructions, I did a job many (myself included) would be proud of.

My .02...