Earrings №6 Hypocycloids
thingiverse
You can find related math at Wikipedia's Hypocycloid page. In the script, variables N and D stand for k=N/D. There are essentially two different scripts: flat and volute. I created several samples with varying parameters. Keep in mind that volute scripts may take hours to render. The clutches shown were taken from Thingiverse's 3517600 model, but any other would work.
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