A few years ago I took a class at college where we got to use a 3D printer. My main hobby is definitely model railroading. But in taking this class my desire to make custom supplies for my model railroad greatly grew. I had been putting it off due to the expense. I finally had enough set aside to decide to make a build. The question was... what would be feasible?
I did weeks of research into Reprap, all the makerbot models, and even bought a great book called "Printing in Plastic" (which just shows you how to make a different version of something similar to the reprap models. I thought that this would be the cheapest since i would be making most of the frame out of wood.