Rotation distance

Definition

Rotation distance is Klipper’s millimetres of motion per motor revolution. On an extruder it is millimetres of filament per gear revolution. If you request 100 mm and measure 95 mm, the rotation distance is too large: new = old × 95 / 100. It is the inverse of Marlin e-steps: RD = (full steps × microsteps × gear ratio) / e-steps. Calibrate after a new hob, gear or Bowden tube.

Calculators that use this

• FDM calibration & firmware

  Klipper Rotation Distance Calculator

  Convert a measured extrude test into Klipper rotation_distance, or derive rotation_distance from Marlin e-steps, full steps, microsteps and gear ratio.

• FDM calibration & firmware

  Stepper Motor E-Steps Calibration Calculator

  Calculate new extruder e-steps from old e-steps, commanded length and measured filament. Formula: new = old × requested / actual.