For some reason I thought it a good idear to stick weld this thing together using the appropriate weathering electrode. I'm no stick weldor, but I'm willing to learn. I welded the entire inside seams of the basin, which was about 18' long and 16" wide. I used a Maxstar 200DX for this project. Sweet machine.
1. material shows up.
2.-5. We worked from a scribe off the wall at the site. It had an irregular curvature to it... of course. Plasma cut the bottom from a template and started tacking the sides up. We also cobbled together a long platform on which to build this thing.