The Blue Marble

Kaplamino gives us look at the project he's been working for three months. It's a chain reaction marble run on a tilt table. There are magnets, levers, fidget spinners, catapults, and all kinds of clever segments all working together to get one blue marble to the end.

(YouTube link)

Kaplamino (previously at Neatorama) says it took about 500 failures to get this video, but he refined the design along the way. After the design was perfected, it only took about 30 tries to get everything to work in one perfect run. -via reddit

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