[|DELTA|]

We used Lots of different sized Jigs to hold things in place. also, as mentioned above, clamping under where the squares rest (to hold them up) and then measuring, tacking, measuring, cussing, cutting, and welding it up. ours turned out fine though. One thing that helped was putting a small but tall welding table in the middle and welding up things (and holding the top box up and twisting it.)