ok, so i am building a rectangular fuel cell, my plans are to cut a sheet of 14g steel I have laying around into a large plus sign with the center being the bottom of the tank, fold up the four sides and weld it up (I may weld a piece of 1x1 angle in each upright corner too for strength and to seal it better. My question is, since my neighbor can't brake something like this...how would you go about folding all the sides up? The normal methods for a flat sheet won't work because of the four sides... Any tips? Anyone else made one like this? I really want as few welds as possible.
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