Ball Track Hand Spinner
myminifactory
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]
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