Right now I'm building a larger N scale layout. Using light materials to cut down on weight and expense. Platform top of modules is 1/4 inch BC plywood (sanded one side). Bench frame work made from 1" x 3" pine....which I used to call the cheap stuff. The quality is still the same....but it's no longer cheap. $10 for bundle of six.....eight feet long.
Since plywood is thin....will be using 1" x 3" support ribs every foot....to screw platform down flat. Plenty strong for N scale (probably HO too) and easy to carry and move when needed.
:: Mike Day :: N scale dismantler :: BNSF :: Canadian Pacific :: CSX :: NFS :: Union Pacific ::