Marble Turntable with Gear

A printable turntable that uses marble instead of ball bearing, ball bearing are hard to come by instead of marble ball although they are not round like ball bearings.

This one intended for my friend's project for his turret driven by servo and to stabilize the toy gun during movement.

There are herringbone gears and servo mount as well, the servo mount will drive the turntable from the side and ratio are 1:1

You can mount the servo mount object to a servo or motor and have your turntable rotate the way you wanted by either remote driven or constant turn

It is also able to withstand heavy object, probably 10-20kg, tried with a large roughly 1.5m x 1.5m whiteboard, and it spins verywell