I've read that, using the same techniques he shows, you can use the styrofoam "plate" that packaged meat comes in. You have to be a bit choosy to get some that are flat and undamaged.
Martin is a true expert in model trains, especially scenery. These portals are amazingly real-looking.
FAR TOO MANY Americans are proving NOT to be worthy of the incredible bounty of their unbelievable Country, which was given to them by the Blood, Treasure and Sacrifice of those before them.