Stackable Planetary Gear Mechanism (Reducer)

A fully functional hand-cranked model of a multi-stage planetary reducer. Each stage has a gear ratio of 1:6, so the overall gear ratio of a 3-stage reducer is 1:216.  The design allows for an unlimited number of stages, but a practical limit is 3 stages. Assembly takes about 30 minutes. Some of the cogs needs to be shaved so it can rotate freely. Mind the direction of the gears to assemble it correctly.

Recommended print settings

Print profile: Fine
Initial platform: None
Print supports: Off
Advanced settings: Default
  • Total print time 34 hours, 30 minutes
  • Total filament 73.5 m
  • Additional non-printable components
  • Printed all at once