Subroadbed progress

I think I have a method that will work. I still have to pickup some Titebond glue and quick clamps, as recommended by Mr. Darren T. Kinleyside, but I am on the right track.

There is 4" of separation between bench work and the top of the sub-roadbed. That was done so that two layers of 2" foam could be stacked and carved for scenery.