Originally posted on MAKE:
Michael Henriksen has created a whimsical marble machine with tiny proportions. A cam-shaft moves the steps on the staircase, allowing the tiny marbles to ascend and then shoot down the curving track.
The entire machine is laser cut and available as a kit on Busted Bricks. The base is about three inches square and the machine stands just five inches tall.
[via The Automata Blog]