I put the aluminum and plywood side on ...
I put some reinforcement under the board. When I layed the floor on the tubing, there seemed to be a slight amount of sag when I put weight on it. I felt it needed some help. I didn't see this layout on any of my drawings, but there was a need to put a small piece on either side of the hole for the compass, and I decieded to keep it symmetircal.
then I varnished it ...