I think I know what you mean by x break but am not sure. I'm envisioning a bent V in the sheet which shape then X in the bottom, but have no idea how that would get made other than stamped or welded on to stiffen it.
do you have a pic? regarding reinforcing the lip I'm assuming bend 180 degrees onto itself.
I'm trying to avoid making the box out of 0.125" thick as it would weigh a ton. I can maybe make an aluminum frame and then drop in a stainless steel floor. If I don't set the coals near the aluminum it won't melt ...
My normal protocol is to use river sand to insulate and prevent warpage. then subsequent fires I use the recaptured prior ash and sand for this purpose. In the past though maybe it was closer to 13G ...
I don't want to break down and spend $250 on a firepan --- I would really love the dimensions to allow me to place a bunch of miscellaneous water jugs and pelican boxes in the firepan tray and hang it in the bay of my cataraft ... since the dimensions would be large (40" x 24"?) I'd like to avoid anything thicker than 16g ...
Hey, if you want me to take a dump in a box and mark it "guaranteed", I will. I got spare time.