Check this out. Excellent! These are the kinds of repairs you can accomplish with these little machines and some skills.
His videos have made me a better welder for sure. He covers everything from welding mild steel with the MIG to doing exotic alloys with the TIG. His arc shots are always clear as day and well narrated.
Oh yeah , got the site in my favs, a lot of good info http://www.weldingtipsandtricks.com/how-to-mig-weld.html