25 Cent Puzzle
thingiverse
This is a simple yet cunning puzzle box modeled after Jean-Claude Constantin's ingenious creation, the 20 Cent Box. I initially discovered it through a video on Mr Puzzle's YouTube channel (be warned: https://www.youtube.com/watch?v=aVjmwW8QCNk). After printing, insert small magnets with a diameter of 6mm and a thickness of 1.5mm into the holes. The front plate, featuring the slots, should glide smoothly within its grooves, while the back plate should remain firmly in place. To solve the puzzle, you'll need a standard US quarter or any coin with a diameter of approximately 25mm and a thickness of about 1.5mm.
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