How do I go about shaping a flat sheet of aluminium/steel into a box/tray. I want to make a square box but I don't want seams on the edges and corners. I know it can be done on a hydraulic press but I don't have access to one or the finances to get a company to do it for me. What sort of thickness would I be looking at before the job becomes to difficult by hand.? Any help would be gratefully received.
Gadget