SpiralTrack

Update

I've added 2 updated STL files and and 2 photos that show what's changed. Also, here's a 15 sec video that shows how the new design works:

https://youtube.com/shorts/TFi5C0opzf4?feature=share

SpiralTrack2.stl is the file in the pics & video. SpiralTrack2a is the same design, but with a hole in the center like that of SpiralTrack.stl. Surprisingly I discovered that the design with no hole uses less filament and prints faster:

Spiraltrack2a: 76.01 M filament, 14:23 print time
SpiralTrack2: 69.71 M filament , 12:43 print time

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This was a surprisingly difficult design to finalize, and it's not quite perfect yet. I'm posting it now because it does work fairly well, but a few more tweaks would make it even better. Here's a short video that shows how it works:

https://youtube.com/shorts/4JNl9mg35D8?feature=share

For the video I used 3/4" diameter steel ball bearings. They are available from Amazon in packages of 10 for around $10.00. Of course there are other sizes too.

If you decide to print this be sure to read the Settings info below.