Circular Puzzle Piece - Tolerance Test
thingiverse
Puzzle pieces with always the same tooth, but a varying tolerance on the opening. 9 pieces form one circle. If you need more or less, you could always test your luck and ask (I've included the Autodesk Inventor file too) I found that the 0.1mm variant fits best, provided you use the appropriate/good flow% for each filament.
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