a spinner design I wanted to try based on D13mm steel balls
balls can run freely inside their tracks, will go to outmost position during high rotation speeds
kind of mini marble run during slow rotation
added revolving grooves for better haptic feel
needs 1x 608 skate ball bearing and 3x D13mm steel balls
bearing will need to be fixed with a bit of glue
added first test version with straight tracks in files (V2)
model units are [mm]
printed in DasFilament PLA
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