Product Idea |

Hand-off Marble Machine


This is a LEGO GBC (Great Ball Contraption) Module. Its purpose is to move small balls from one place to the next. It is driven using two LEGO Power Functions Motors. It uses many balls to show its mechanical movements. 

Counterbalancing each other, the swinging arms help the motor run smoothly. The timing and movement of this module is made possible by many gears. It can work as a large table display or just as a fun toy for kids and adults.

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