First thing I made ever.

youtube: https://www.youtube.com/watch?v=OCQOcc_9qfE

Design isn't that great, but I wanted a way for Gravitrax marbles to overtake, as I do like races :)

Feel free to improve this, and let me know, so I can print your pro version.

A ring has to be glued on the tile, I used the ring of this design https://www.thingiverse.com/thing:4237515

Update: Added a version that is 5% tilted, and for the fun of it, I didn't cut it so its a tube now. I personally like this version best.

P.S. I also used the sloped tiles (from the gravitrax trampoline set) to position the split downwards, so no marbles get stuck.