I needed some very low profile train statins that fit a couple of different sizes of dominos. This was a very quick model, but the part I had the most fun with was creating and modeling the train, which was a fun bit of sketching to get it right.
There are two station sizes, one for smaller dominos that are up to 23mm x 46mm. Then a larger one that can work with Dominos up to 27.5mm x 53mm.
This is also a good model to do a two color print with, as the base can be one color, and the edges and train can be a second color.
The author hasn't provided the model origin yet.