The surface of the layout can be as simple as a hollow core door. If you prefer, an open grid of 1 x 3 can be built, then topped with traditional plywood, or slightly less traditional extruded-foam ...
An N scale layout on a door is to that scale what a 4 x 8-foot table is to HO: a popular and convenient platform on which to build a compact layout. And for good reason. A hollow-core door is a ...