Impossible Object Puzzle / Square + Circle + Triangle in One Shape!
thingiverse
A classic engineering puzzle! Check out the video: https://youtu.be/V-WyDesFc7w One object can pass effortlessly through triangular, circular, and square holes! Check out my [Amazon Page](http://amzn.to/2HpvB8i?tag=tv-auto-20) to see what kind of gear I use to make these models!
Download Model from thingiverse
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