Usually work the last two hours of day. Slow, but looks like the first four pieces are about ready to tack and weld. It' s gonna be a shocker when that price tag comes in. The undertank pieces will be overlapped, especially on the backbone area, double welded on opposite sides bringing the gauge to double 16 gauge and giving a double bead. Just thought of that a couple days back, why butt the joint? Not stock, probably lose capacity, won't know how much until it is filled, if ever. The welder thought the shaping was very cool, for whatever that's worth, thought it was a viable project.
IMHO, at this point, would I have done this if I had known how difficult the project? I'm very stubborn, that said, keeping track of the expense, and can report that buying a pre-manufactured tank likely would have been cheaper. And, at this point, unless you are a qualified metal shaper, welder with equipment or access to same for free, and so on, the task is very consuming. Life's a journey, always imagined riding behind a very cool one off aluminum tank, hope this is it.