Rotation distance

Definition

Rotation distance is Klipper’s millimetres of motion per motor revolution, or per revolution of the final gear when gear_ratio is set in printer.cfg, as on a geared extruder. 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) / e-steps, times the gear ratio only when that same gear_ratio line is in the config. 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.