Impossible Object! Triangle + Circle + Square Puzzle
Description
Check out my [Amazon Page](https://www.amazon.com/shop/andrewsink) to see what kind of gear I use to make these models! A classic engineering challenge! Check out the video: https://www.youtube.com/watch?v=zMFU4UBBn2I One object can pass effortlessly through a triangle, circle, and a square hole. Also doubles as a printer calibration test!
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