Here is my start on a project I have thought about for a number of years. The GW board I really like but, $300 is a little steep, as great as it is... It has inspired me to make my own. My thought is to make this extremely lightweight and portable. First step is to design the boards for maximum flexibility.
I started with 2' x 2' squares and the mountain concept from GW and thought to expand to include some ravine/rivers. Here is what I have come up with so far.
My thought is to use the HDF insulation boards with some sort of thin backing. If I use the insulation and some tempered fiberboard I can buy an 8'x4' sheet of each for under $20.
Thoughts and ideas are welcome!!