Here’s a set of practice tack welds I put down on a sheet of 20 ga. metal this evening. I think, after some trial and error, I’ve got a good setting for this thickness. Most of the metal on the Travelall is between 16 and 18 ga. so I’ll have to do more practice with a new sheet of that before I touch the truck.
Overall I’m pretty pleased; on this last piece there was no burnthrough and I got solid welds down the line. You can see the places where I hadn’t snipped the blob at the end of the wire—I’m going to buy a spring-loaded wirecutter especially for this. I was rushing things so the metal did warp a little, but when I do the truck right I’ll definitely take my time and space things out.