Forget hands — this 3D-printed clock keeps time using nothing but marbles

Based on the innovative rolling ball clock design created by Harley Mayenschein in the 1970s, this awesome 3D-printed variation is yours to make at home, courtesy of free instructions.

The post Forget hands — this 3D-printed clock keeps time using nothing but marbles appeared first on Digital Trends.

from Emerging Tech – Digital Trends https://ift.tt/2NMhf97