I am going to start doing some card-modeling, not only because it seems like a really cool thing to do at 3 in the morning when i get tired of playing Railroad Tycoon 3, but because the basic premise of it sounds like I can do it on the cheap. So: I am thinking I want to build stuff in HO scale, since I already have HO scale stuff. And it is a good size when you live in about 96 square feet. What I am most interested in building is train cars, freight and passenger. My media will probably be Manila file folder. I have built a couple truss bridges out of the stuff (and just might do another). i will probably build the carbody out of manila and use pennies (they're cheap ) and buy a set of truck and couplers for each car. Unless I figure out an ingenious way otherwise of course... The point: Anybody have any suggestions as to where to start for some patterns? (I prefer North American-type stuff ) What computer software is there that I can design my own stuff? Any pointers, suggestions, slaps in the face with a tuna are appreciated!!