3D Printed marble machine

This is the second marble Roll I've made. The first was made from wood and was about the size of this one, 2'X4'. That was 30 years ago, or more. I decided to try and print one after buying an Ender 3 Pro 3D printer.
I used Fusion 360 by Autodesk for all the design work. This was my first experience using a 3D cad program.

* Note to anyone wanting to reproduce what is shown in the video; First step would be to buy 5.0mm Stainless Steel Ball Chain and try to create a loop of 68 balls for the drive chain. You cannot use the splicing links as they are too bulky. The fabrication of the chain loops was fairly difficult.
Also, there are 73 files.

* I am currently working on another version that doesn't involve splicing the ball chain. I plan on making all .STL files available and instructions for anyone wanting to build their own.