illusion arrow
Description
This is a 3D optical illusion of sorts. When looked at from 45 degrees, this arrow points right, turn it 180 degrees on its stand and it will appear to point right again My design, not my idea. Original idea: https://nerdist.com/spinning-arrow-illusion/ My STL files aren't properly oriented, and the gif doesn't seem to play here, but you can see the demo in the gif here https://imgur.com/gallery/H6yfKlQ
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