I think it is time that i have a truely flat surface for glue ups and assembly so I am going to build a torsion box. My shop is in my basement and like most people I have limited space, so I am looking to make a box that can be place on top of saw horses while in use and then stored away when not in use. Has anyone built anything simular to this? I am also looking for input on materials to use for the construction of this torsion box. Anyhelp is appreciated.