I like the idea of stitching. Also, weld the northwest side first, the southeast next, with cooling in between, that should even out the heat. Yeah, I blasted this one, beginner's enthusiasm. I had heard metal could warp, found out the hard way, but, hey, that's how you learn. Good suggestions, ever...

Hello, I am new to welding. I am mig welding a 16-guage box for a grill out of hot-rolled steel. Noticed this gap after I had welded two sides. Did not tack weld. https://plus.google.com/photos/photo/103754471497291178620/6501421096077388322?authkey=CIOJ4_Hx-K7GJQ What would you do to prevent this? ...