I got a MAC tools Mig welder. Bought it for $250 from a local guy with a large gas cylinder. So far I used it to butt weld in new floor pan patches and to repair the area under my battery tray. Works like a champ. Just make sure you get the small guage wire and make tiny tack welds allowing time to cool.

Now I just need to get my trunk wells repaired.

__________________
1978 Mercedes 240D
1981 Mercedes 240D
1982 Mercedes 240D