Motorized lazy susan with marbles

I needed a way to better present my projects at the end of the videos, so I built a Lazy Susan with marbles.

The first step was manufacturing a circle jig for the router. This worked perfectly, and I could cut the grooves for the marbles in both boards and also cut one of the boards into a circle.

The cricle jig
The cricle jig
Grove is cut
Grove is cut
First testing of the rotation
First testing of the rotation

In hindsight now I would not use a groove for the marbles but instead would just drill individual holes for each marble. As I have the problem that the marbles then to collect on one side when the load on the top is uneven.

To prevent the rotating board from falling out, I fastened it to the base via a screw in the center. And I don’t want this screw to be visible on the top, so I glue a small helper piece containing the screw to the bottom. But now the central part did not have enough clearance anymore, so I needed to remove some material there as well.

The next step is adding feet to the base, this also solves the problem, that the baseboard is quite warped – I should have used a different wood type, but this was the material I had on hand.

Feets installed
Feets installed
More testing
More testing
Side view of the marbles
Side view of the marbles

I initially tried to add the motor on the underside, but this did not work out, as it was pushing the top up causing the marbles to collect on one side. In the end, I opted to move the motor to the side, which does not look as lovely, but now it works which is way more important! I connect the power for the engine via a small dimmer module, which allows for some speed regulation.

I will need to find a better solution to attaching the motor cradle as the single screw I’m using right now is not strong enough and will wear out soon.