The Marble Box (centralpetal force puzzle)
thingiverse
This puzzle originated at my eye doctor's office. The challenge is to get all marbles into their respective holes simultaneously. Believe it or not, it's entirely feasible! Have your friends try their hand until they reach the breaking point, then reveal the clever solution. If you're interested in purchasing a printed version of this model from me, or any other design I've created, feel free to send me a message on Thingiverse and we can discuss the details.
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