I designed some platforms for the C-track system.
The STL files are freely available on Thingiverse (user phildc).
Track distances of 64.3, 77.5 and 109.4mm are available.
Some parts include a subway passage, and also a slope and a flat surface at rail level.
Separate stairs and subway parts are also available, for those building their own platforms.



64.3 and 77.5 STL files, and stairs
109.4 mm STL files
Wide stairs

Extremely cool and useful- nice work!

Thanks for this interesting suggestion! Just checked the dimensions and geometry of the Märklin M-track, and did a fast test with some remaining tracks.

Conclusions:
- The parts fit to the track, but the angle of M track is a little more steep, not a problem, apparently.
- The rails protrude with 1mm. Could be solved with a piece of cardboard? Or platform profile changed.
- The track distance: apparently for M tracks: 77.4 and 96.4 mm if staight access, 74 and 90 mm in case of an access in curve ?

Track distance between track centers is the main problem, but I could adapt my design for M tracks, if there is enough interest (It is an OpenSCAD project, hence easy to maintain).
Maybe do a test with a small part? And tell me.

pleasekeep us updated, I am an avid M track user and wont change to K or C

Just bought a nice 3d printer. Bambu P1S with AMS Pro