yacs three arm compact coin spinner
thingiverse
Another compact three-arm coin fidget spinner catches my eye as a personal favorite among the bunch. The standard 608 skate bearing fits perfectly into the center hole, measuring 22 mm by 7 mm. Several ready-made STL files are available for various coins I've accumulated: * Twenty eurocent coins * Twelve five-eurocent coins * Twelve one-eurocent coins * Nine UK two-pence coins * Twelve UK pennies * Twelve Chinese 1 Jiao RMB coins * Fifty eurocent coins (Note: This one requires manual setting of the coin count, and the image is slightly rotated, but it works well in slic3r anyway.) The one-eurocent version stands out with its smaller size, featuring thin walls between the bearing and coins, as well as a thinner outer wall compared to other STLs.
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