[aaronbr28040]

We used 80/20 extrusion for the past three years obtained from Bertelkamp. They are usually great about getting us our parts fast if we are in a pinch. Extrusion can be combined with lightweight square aluminum tubing to build a very strong/sorta lightweight frame. To cut weight last year I rebuilt the inside platform of our frame with aluminum brackets that I cut to match the extrusion frame and riveted the frame together as we dont have welding capabilities as of yet (I do at home but thats four hours away haha it doesnt help too much). Extrusion is great because they have so many different hinges and joints that can be used. The only problem is that it can get outrageously expensive for some of the hinges and fastening plates. You can talk to some of the distributors and sometimes they will help you out with some discounts.
-Aaron