Important -- The Work-In-Progress marker isn't a joke, I don't know how many stupid things happen

This is a further development and SLA remake of my FDM printed passenger car 901-211 of the Spreewald forest railway you'll find here on thingiverse^[8] but not all parts are full compatible.

If you print the following designs, please post your make, comment or just tell me. I don't need many of the cars and a lot improvements of the 3D files and documentation are only made, to give you better results.

Main changes

• added bolds and sheets at the body
• updated steps,footbridge and hand rails at platform
• breaks
• re-enforced several parts because of brittle resin

Scale factor from TT to H0 is 137.93%, but depending on the gauge the distance between wheel bearings would be to wide, so created a special chassis for H0.

On TTm coupling mounts are threads for M2.5 screws. For H0m there are simple 2.5mm holes. I added an experimental clip for NEM 362 couplings.

Short history

Four nearly identical coaches were built in 1928 in Gotha for the Spreewaldbahn, a 1000mm narrow gauge railway between Cottbus and Lübben (Germany). After being added to the Deutsche Reichsbahn (DR) they got the numbers from 901-211 to 901-214. These wagons were wider than usual narrow gauge coaches - 2.90m (maybe 2.94m).^[8]

Two of them (212 and 213) were reconstructed in the 1950s(?) with different windows.

Printing

I printed all parts with 0.025 layer height on an Anycubic Mono 4K. I'm new in resin printing, so there will be better values. You have to add extra supports at the sides. So I first supported windows and pulled than supports to the outside but with the actual 3.x version of Anycubic workshop a lot things changed. Auto support improved a lot, I printed the H0m chassis with medium supports.

Use experimenal H0m_901-211-SLA_chassis02.stl instat H0m_901-211-SLA_chassis.stl (narrower cones for wheelsets).

I printed:
2x Handrails standing and turned a little to inner side
1x Chassis (flipped upside down, 135° Y) this generates some issues at the platforms, but these are easy to sand.
1x Car Body 45° Y
2x Windows side (printed vertical and added supports below, at sides and at unimportant points)
2x Windows front (printed vertical and added supports below, at side)

I don't add separate Windows for H0, scale them to 137.93% for H0.

The separate stairs are to replace broken ones, just in case ...

The 45° or the 135° at 0.035mm layer height will match the pixel size of my printer (0.035mm), optimise angle according to your needs.

Post Printing

You have to cut the waste pipe at the bottom, there is no toilet. It's here to keep the compatibility.

Updates

20231022: Added H0m_901-211-SLA_chassis02.stl after reported problems with too lose wheelsets. STL without the 02 will vainish after my or a reported sucessful print of the replacement part.
20230426: Added an experimental clip for NEM 362 couplings.
20230330: Added windows to print in high clear or make a mold from
20230324: Next BS happened ... sorry, replaced H0m chassis again
20230321: Changed chassis for TTm H0m to provide more space for the wheels.
20230320: Changed chassis for H0m because of a stupid mistake.

Origin and licensing

For technical drawings of wagon 211 look at the sources below.^{[7] and [2][3][4]}

I don't want any commercial use of this design and prints.

You are free to print my work for your projects, close friends and maybe your model railway club.

If you are representing a model or railway club, a school or something comparable with these and want to use it for educational purposes in higher numbers, please tell me.

Sources and more literature

BTW: The journal "der modelleisenbahner" is available online at several places, like archive.org. I will not add links for several reasons.

[1] Großstück, Harald (1988). Die Spreewaldbahn. Neueste Erkenntnisse aus ihrer Geschichte. der modelleisenbahner 37 (5), 5–7.
[2] IG Spreewaldbahn e.V (2022). Personenwagen 901-213. Available online at https://www.ig-spreewaldbahn.de/fahrzeuge/personenwagen/pw-901-213/ (accessed 11/5/2022).
[3] Kieper, Klaus/Preuß, Reiner/Rehbein, Elfriede (1980). Schmalspurbahn-Archiv. Berlin, Transpress, Verlag für Verkehrswesen.
[4] Preuß, Erich (1979). Die Spreewaldbahn. Berlin, Transpress, Verlag für Verkehrswesen.
[5] Spranger, Friedrich (1965). Die Spreewaldbahn. der modelleisenbahner 14 (7), 203–205.
[6] Uhlemann, Karlheinz (1972). Der Fahrzeugpark der ehemaligen Spreewaldbahn. der modelleisenbahner 21 (11), 328–331.
[7] Uhlemann, Karlheinz (1972). Der Fahrzeugpark der ehemaligen Spreewaldbahn. der modelleisenbahner 21 (12), 365–369.
[8] tomek_s_scaled_world (2022): TTm 1/120 - Spreewaldbahn narrow gauge passenger cars 901-212, 901-213 and 901-211. https://www.thingiverse.com/thing:5608285