In the past I have collected and adapted quite a few models to make them suitable for 3D printing, which I find a great way to improve the hobby and expand my fleet of rolling stock. Below you can find updated renderings of most of the cars I made (or adapted) and 3D printed over the years. With more to come.
62ft Woodchip Gondola (Update 30 Nov 2023)
Prototype length 62ft (18,9 m), in HO Scale 21,72 cm.
The actual model turned out shorter after upscaling it from N-scale. Width and height matched beautifully with my scratchbuild woodchip car but they were too short. Another run at 105% length is on the printbed right now and should be ready by tomorrow morning. I also downloaded a railcar truck model from Thingiverse and adapted it to accept a clip-on RFID tag holder under it. This has yet to be tested however. The trucks look decent enough and accept old plastic wheelsets, which I had lying around. If these carse evolve into masterpieces some day, they will get quality trucks and wheelsets, but for now I’m content. Ladders, footsteps and grab irons, as Well as some other details will be separately applied.
This car has a build report (in German, sorry)
63ft Bulkhead Flatcar with „Log-Bunks“
Prototype length 63ft (19,2 m), in HO Scale 22,07 cm
54ft PS2 „High Side“ Covered Hopper
Prototype length 54ft (16,46 m), in HO Scale 18,92 cm
This model was entirely modeled by me in Blender using the corresponding Proto2000 HO scale model for reference and measurements and features brake details, fine scale ladders and grab irons as well as some nuts and bolt details. The design cost me the better part of two weeks modeling, some 50 hours in total.
This model has some commercial quality, so the STL file will not be available, I’m afraid.
50ft Bulkhead Flatcar
Prototype length 50ft (15,24 m), in HO Scale 17,52 cm
This car also has a build report (in German, sorry)
62ft Skeleton Logcar (WIP)
Prototype length 62ft (18,9m), in HO Scale 21,72 cm
62ft NSC Bulkhead Flatcar (WIP)
Prototype length 62ft (18,9 m), in HO Scale 21,72 cm
50ft Jordan Spreader (Type 2)
Prototype length 50ft (15,24 m), in HO Scale 17,52 cm
40ft Snow Plow
Prototype length 40ft (12,19 m), in HO Scale 17,52 cm
73ft Centerbeam Flat Car
Prototype length 73ft (22,25 m), in HO Scale 14,01 cm.
New renderings will follow shortly


My ressources are primarily from 3D Warehouse, even though None of the Models comes 3d printable.
Example: https://3dwarehouse.sketchup.com/user/c880780c-3a4d-4215-8f19-6a612d2adde3/TRG