Even the cheapest home machines are ideal for that Jerry. I print out clamps, gears, armatures, etc as I need them. Track links in your preferred scale would be a breeze. You could also print them out on trees. Even if your printer's max resolution is 100 microns, you can slice it at 50 if you need to, but you shouldn't need it for parts like those.
With the right extruder, you can print out all sorts of material, even edibles. I know of one company that is spooling a wax based clay (120 degree melt), I bet you could even print out a master that could be melted out of the mold.
If you haven't checked out the software yet, 123Design is free and a very powerful tool. I make all my mother molds for silicone with it. It takes seconds to design, about a half hour to print and cuts about half a day off the normal process.
Last edited by ausf; 02-19-2017 at 02:01 PM.