Soldering to Chassis

[bgadow]

I second that, brute force wins. I have one that looks like the picture (different brand) plus a modern Weller that's a monster. Once used the latter to solder a hole in the radiator tank of an old Chevy and it was still perfect after nearly 20 years. In the dark the tip glows red. Don't do as my Dad did and touch it to see if it's hot enough