Impossible Dovetail in a Pentagon
thingiverse
Clickspringprojects.com showcased a quintessential example of this puzzle in brass and aluminum, as seen on thingiverse examples here and here. My modified variant expands the number of sides from four to five. Additionally, there are also couple of hexagon variants available on thingiverse here and here. I have not yet printed this design but included a box version with walls that are one-quarter inch thick.
Download Model from thingiverse
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