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HO Scale Roundhouse

3D model description

A full size Roundhouse printable on a 7 inch bed.

Whew! This was a challenge. A few weeks ago a fellow MR and 3D associate Bill Schonfelder from Killeen TX suggested I model a roundhouse. So Bill, here it is.
Unlike my other models I have not assembled and painted it because I all ready have a roundhouse, so I don’t know if there will be any issues with it. If there are, let me know ( and I’ll get them fixed asap. I am printing critical and interfacing parts to make sure they fit together well.
My roundhouse is modeled to associate with a 90 foot turntable which means it will fit engines up to 12 inches. The doors are on 15° sections with about 3 inches between the turntable and the roundhouse.
The doors are hinged using a piece of 3/64 inch brass rod. To that end they “could” be setup for remote operation by running the brass rods all the way under the table to connect to servos.
The roundhouse is modeled as a brick building, with a slate roof and wooden doors about 19 feet high and 14 feet wide.
The parts are modular so you can make it with one stall or as many as you like. The floor is modeled as a wooden floor. I created it with a recess for the track, that puts the track on the same level as it would be on a 3/16” cork roadbed.
I’ve tried to include lots of detail with interior trusses, exhaust stacks, gutters, downspouts, windows with glass etc.

  • 3D file format: STL





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Yes, both buildings have the same problem. No, I don't have any copyrights and you are welcome to do what you like with my models.


Thank you Kim, for your reply. I do not have any Baseboard at the moment so I am still at the modelling stages. There is no hurry. Did you see the same p[roblem with Two-Lane Engine Shed? Do you have any Copyrights on these models? As I am thinking about offering kits to outer Railway Modelers here in Thailand who do not have access to 3D printers. Regards, Martin.

Major blunder. This will require some major redesign work on the doors and attaching walls. For now, you could notch the doors at the bottom to clear the track. I'll get started on the changes and try to keep them at a minimum, but again it will take some time.


Hello, a very good friend of mine has 3D printed this Roundhouse kit for me. I am making it a 6 Road Roundhouse. I have come across some small problems, but I have got around them. I would like to have the doors opening and closing, but you have not made an alliance for the TRACK. It fits inside the house ok, but the doors go all the way down too the base.To modify this would mean drawing another front panel with the door set higher. It is a great kit. I know it is not quite English, but it is good enough for me. Know I need to look for a 3D turn table to suit the Roundhouse. Martin. (Thailand)