Märklin stang kobling

Märklin adapter coupling. It is used to fix 2 carts to each other in the Märklin model train setup.

Inspired by a similar device which unfortunately does not fit exactly (this one is longer)

Will be tested in real life over the next few weeks

*Edit: V3 has more material behind the lock tab for 3D printing with a coarse hothead/extruder

Direct link to the part in the Onshape tool can be found here: https://cad.onshape.com/documents/cdc3d9d0f1b838a3e7e66daa/w/441cb3dd2287a918718766d3/e