MaKim Projects’ beautiful rotating desktop marble machine puts a clever twist on the classic marble run by rotating the track while gravity keeps the marbles moving.

Steel bearings roll downward naturally through twisting, spiraled ramps, then hop onto an illuminated corkscrew elevator that lifts them back to the top for another run. Because the build packs tons of small bearings into a compact space, there’s always something in motion: smooth, mechanical, and oddly hypnotic.

A LED running up the central screw lights the entire track, and swapping filament lets you customize the glow. And if all that motion gets a little loud, a built-in potentiometer lets you slow the rotation and calm things down.

Even better: the 3D model is available for free on MakerWorld!

[Via TA]