Miniture Thomas Train Track

My son received some miniature Thomas train engines as a gift. These are smaller than the standard Brio and whatnot that run on the wooden tracks. I don't know what type of track they are supposed to run on. It appears that the track has some sort of T-bar in the middle so that the train stays on the track.

I figured if he had some train engines, he needed a track to run them on. Rather than looking into purchasing proper tracks, I decided to print them. I looked on Thingiverse and did not find any tracks which looked like they would work, so I decided to draw them up myself. This thing is the result.

I did not add the T-bar which I suspect it in the official purchased version. There is a single straight bar in the middle of the track which the bracket on the bottom of the engines fits around to steady the train. I just wanted something simple and quick so he would be able to properly play with his new train. This thing is a 45 degree curved section of track. That means