Hi Sam, I too have been using folding tables for the last several years. I have a set of 6 large ones (30inch by 6 ft) along with several 2ft by 4ft tables that I put along side the large ones to facilitate turn around loops and such. It is important to buy all of the same brand as actual height can vary by manufacturer.
What I use to deaden the sound of fastrack is the moduler children's play mat available at of all places, Sam's:
http://www.samsclub.com/sams/s...od3310384&navAction=A set of two or three will easily cover 6 tables. IT works better if the tables are side by side, as they are only 24 inches square, but with the way you run your track it should still work well with just 3 inches gap on any one side. I've done something similar to yours with tables around a perimeter of a room.
Its a little tricky to get the edges (the interlocking sides also have straight edge pieces) all coordinated as they vary by square and its orientation, but once you have it figured out it tears down and sets up easily. The colors are kinda fun, but I usually cover with tableclothes. There is a dark grey side that is a little bumpy (kinda like expanded metal) but its OK to use to.
Been thinking that someone should make covers or adhesive sheets for these to create a real ground appearance, complete with streets, rivers, etc. That would make the moduler concept work even better.
I think its great what you are doing. Perhaps you can show us your work in a train show or two as well.
BTW, I used to live in Cary (its a place not a person)... The locals in the Raleigh area say its actually an acronym... Containment Area for Relocated Yankees. I resemble that remark.
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