N scale 55 ton hopper car

thingiverse

OSTycoon's awesome HO 55 ton hopper car, scaled down to N scale. The new version builds the whole car in OpenScad rather than just scaling the original STL. This allows a bit better control of the wall thickness which were a bit thin. Additionally there is now a version of the car with a buck in it to make it easier to fill with a load of your choice. Added a HiRes version meant for resin printers. It has much thinner walls and floors as well as adding brake platforms, ladders and some detail to the ribs. Note that the HiRes version takes ~50 minutes to render on my machine, so if you hit F6 in OpenSCAD and nothing happens, it isn't broken, just super slow. Instructions Use with most commercial trucks (often cheap on ebay), they will just clip on the bottom with the pin. Pin should just press fit, but a drop of superglue will ensure they don't work loose. Print laying flat on the top of the car. The overhangs are close, but should work with out support. Don't use a raft. I printed it in PLA on a Makerbot replicator 2. I find that I need to print these 10 degrees hotter then I print almost everything else. For the HiRes version: The image is from a print on a Wanhao D7. Print laying flat on the top, you may wish to support the brake platform and the middle of the hoppers. Be aware of your peel direction, you want it to peel from the corner or it will try to rip the fairly thin walls in half. I turned the cure time up ~10% to get a little more wall strength.