First off, a little background - in case my post count doesn't make this abundantly clear, I am new to Trainboard. I model the Denver & Salt Lake Railroad (Moffat line) in N-scale during the mid-1920s. This is a railroad (and era) for which, baring some miraculous set of events that I cannot imagine, no RTR rolling stock will ever be produced by any major manufacturer. Only a scattered handful of most D&SL cars and locomotives existed in the first place and quite frankly I recognize that no one could ever make a profit manufacturing these commercially. That leaves me essentially on my own when it comes to amassing my rolling stock fleet. While I love watching trains run as much as the next guy, for whatever reason, I have always found it enjoyable to make my layouts as technically and nit-pickingly accurate as possible (I am a self-proclaimed "rivet counter" as it were - about my own collection at least). That said, just sliding D&SL decals (that I need to custom print anyway) onto undecorated Micro-Trains cars just seemed wrong. Unfortunately however, I didn't see another option: while I greatly admire the work of the kit-bashers and scratch-builders of the world, I want entire trains (15-20 cars long) of some of these cars. Scratch-building that many cars was simply beyond my patience level. During late October of last year however, I discovered Shapeways 3D printing and "Frosted Ultra Detail." The photos of rapid prototyped items posted on this board (thanks for that btw ) inspired me to give this technology a shot! A few months later, I have to say I am convinced: (D&RGW "Fowler Clone" Boxcar) Here is my D&SL/DNW&P 30000 Series Gondola as an example (I apologize for the photo quality, getting good pictures of these has proven a challenge) : They arrived fully assembled as shown. I cleaned, spray primed and brush painted them in order to get them into the condition pictured. I did no sanding, filing or any other smoothing. They smoothly negotiate a 9 3/4" radius curve (with MT "pizza-cutters") and are essentially RTR less MT arch bar trucks and a brake wheel (still need to add that). Price? A hair below $19 each (or less if I order several): okay, so it's not the cheapest rolling stock in the world... But hey, it's custom and built exactly to my specifications! That has to be worth something... As of today, I have three classes of gondolas, two boxcars and a caboose in various stages of completion. I have to say that I am completely sold on this as a modeling process. Even better, it is available to anyone with a computer and internet connection! (and bravery to try 3D computer modelling) Even the necessary software is free depending on what you use. Whatcha guys think?