Ball Track Spinner

• 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]

EDIT 09.06.2017 new stl model added:

• "_inch" for 1/2" (12.7mm) balls (untested)

EDIT 05.01.2018 new stl model added:

• "_8mm for 8mm balls (untested)