Lego Train Magnetic Coupler

3D printable Lego Train Magnetic Coupler Design by Me

Note that you need a technic pin, and a 1x8mm magnet to use this, the technic pin is not part of this project.

The Magnet Holder V2 turns better up and down so I recomend that one.
The Holder V2 has a better hight differance tolerance, so It leaves a gap between the two holders, so the magnets can connect even if they are not on the same hight level.