25 Cent Puzzle v2
thingiverse
This is a modified version of https://www.thingiverse.com/thing:3839352. "This is a simple yet deceptive puzzle box modeled after the 20 Cent Box created by Jean-Claude Constantin (https://www.puzzlemaster.ca/browse/inventors/constantin/6872-20-cent-box). I first found it via a Mr Puzzle video on YouTube (spoiler alert! https://www.youtube.com/watch?v=aVjmwW8QCNk). After printing, glue some small 6mm diameter, 1.5mm thick magnets into the holes. The front plate (with the slots) should move freely in the groves, and the back plate should be firm. A standard US quarter (or any coin ~25mm diameter, ~1.5mm thick) is needed." Big changes: 1. Bigger & thicker box. 2. Magnets are not visible without opening the box. 3. The back is now fully supported so it can no longer be pressed open. 4. More false holes. 5. Chamber in the bottom is sized to hold 10 pennies adding a nice heft to the box.
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