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Impossible Object! Triangle + Circle + Square Puzzle

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3D model description

Check out my Amazon Page to see what kind of gear I use to make these models!

A classic engineering challenge! Check out the video:

One object can pass effortlessly through a triangle, circle, and a square hole. Also doubles as a printer calibration test!

  • 3D model format: STL



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Downloads 2925

Hi! My name is Andrew Sink, and I’m a maker who currently lives in Richmond, VA.



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