How Do These Gears Actually Work? [Video]
In the video above, YouTuber Clayton Boyer guides us through a succession of progressively more remarkable gears, all of which manage to spin together just fine. The square gears at the start are straightforward enough, but the dolphins, the mega-gear at the end, and the I don’t even know what that is at 2:15 are weird and hypnotic to watch.
(via Boing Boing)