I have used a ton of it, but not in the traditional way.
Since, wood and I do not get along, and I have the carpentry skills of an elephant, I use the plastic modular shelving that Lowes and Home Depot sell.
It has open grid work for threading wires and it is strong.
I then place the woodland scenics foam however I need it.
My use of plywood is limited to placing pre-cut sheets on top of the plastic shelving as it adheres better to the foam.
I do not use any nails on the plywood as that is glued to the plastic shelves using Woodland Scenics glue. That glue is strong, doesnt require much, and is forgiving if you have to take it apart. In fact, I dont nail my track as the woodland scenics glue is better.
Being that my layout is on the 2nd floor the lightweight plastic is a god send.
