[Northern lights]

The son of a friend of mine is taking a college course on building hotrods which includes body, suspension engine etc. He was taught (recently) that, when welding in body patches with a mig to turn the heat up and the wire down and just sort of spot weld. Apparently it gives a similar result as tig welding and prevents warping. The theory being that the wire mostly just makes the contact and the two panels fuse from the heat which adds VERY little extra weld to grind off. I'm not a welder and have never done this but will try some practice pieces to try it out. Might be worth a try on some practice pieces.