Marble Machine 2 - Repaired motorized variant

Fixed the lift screw, the original turns in the wrong direction which does not permit the marbles to climb the lift. I used 3/8" chrome Steel balls. Can be found cheap on ebay.


Lessons Learned:

1. Use a floor fan to provide extra cooling for the lift screw, the edges can warp up if there is not enough cooling. The better it is cooled the smoother the lift operation.

2. Add a small strip of plastic at the top of lift (see photos) that provides a lip for the marbles to flip over. This p