Is this possible? I'm looking to model the Scenic & Relaxed and I was just going to use a 3' x 6' sheet of 1/2" plywood and cut the grades and river (much like the Atlas instructions). I live in an apartment and I want to keep the layout easily moveable for when that time comes. A friend mentioned I could try styrofoam to keep it lighter, but it seem too fragile to me to attempt bending grades into it. Has anyone ever had any experience doing so? Thx!