I printed out the loco use my cheap creality ender 3 and despite the obvious imperfections, I believe it came out rather well. The only advice I can give is the use of tree supports rather than walls and a top z distance of 0.22mm seems to yield the best snap off results. Must emphasize the above is merely a test print, resin would no doubt have better results. How lucky I am to find W&T rolling stock files as well as the gentleman that is Bulletwanderer.