Ahhhh @cowpuc you brought back some memories. My first welding I learned in high school was in an auto body vocational class. We learned with the torches on flat sheet metal, migs were just coming about and cost more than a good used truck. We pushed that puddle around until I was welding quarter panels in wrecks without thinking about it. The next year they started a welding class but the shop wasn’t ready until Christmas. I had worked in a sheet metal shop over the summer so I’d expanded on my welding there. I was the only one in class with any experience so once I did my coupons with stick and mig I got to play with a brand new Miller tig the rest of the year while everybody else learned from the beginning. As a joke somebody handed me two Pepsi cans stacked and challenged me to weld em, teacher said it couldn’t be done. As a 17 year old that knew everything I took it as a challenge, a few weeks later I presented the teach with two stacked cans fused all the way around with a continuous bead. No telling how many cans I burned up trying 2-3 hours a day until I got it. Wish I’d kept those cans. I have a pretty well stocked welding shop that since I decided to semi-retire last year is just there for my personal repairs or playing, the only thing missing is a high freq tig to do aluminum. That is probably coming next summer just because I want one to play with again. I haven’t tigged aluminum in 20-25 years so I doubt I’ll ever do cans again but I turn down work every week on aluminum boats that just fixing a few a year would be profitable enough to buy more Yamaha parts.