Some time ago [Kelton] was working on a clock inspired by Rube Goldberg contraptions. It uses only a single motor, and he’s proud to now show off the finished product (video, embedded below.) The ...

Moore curve marble run is a fascinating, 3D-printable project that uses a motor to push marbles. The motorized run incorporates a lift with a spiral guiding rail and steeper slopes for acceleration.

RENO, Ohio -- They start out as red-hot globules of glass. They are spit from a furnace built in 1932, and tumble through a series of parallel rollers and come out the other end as perfect spheres -- ...