BioMax
+1y
All of these frame rack designs would work well, but if you need something that can be disassembled (like I do)...
I took (2) 18' 4" x 8" .250 wall I-beams and welded hitch reciever material across and down. The I used 2"x 2"x .188 to connect the beams across. The legs have castors and are adjustable with bolts to lock everything down once leveled out. How everything is adjusted and locked down, could be done anyway you want, but the basic idea is there. It works well and can be stored in the corner of the shop or where ever. I'm sorry the picture is so grainy, I don't have anything better.