I built the boards in pieces, front and back with 16 gauge. The undersides have 3 braces, but theses are also the mounting points. As I welded, I allowed for cooling and planished slowly as I went. It took a ridiculous amount of time to weld them out because of this. I plan on applying bed liner so it should hide some of the imperfections but I irritates me when people sit on them and pop!
May call it good enough and move on. Thanks for the positive feedback on how they turned out.
