Reply by DonH

A torsion box with folded legs would work fine. On the other hand as per Loren’s suggestion, a door is good as a first step and a lot lighter. I have often used a 32 inch door on a pair of saw horses as a work bench outdoors for really dirty jobs and that works fine. Just shim the saw horses to level. Upon reflection my suggestion of the torsion box may be overkill. Try the door and go from there.

Don

-- DonH Orleans Ontario