E-Steps

Introduction

E-steps (Extruder Steps per mm) define how many extruder motor steps are needed to push 1 mm of filament. If this value is not properly calibrated, the extruder may:

• Feed too much filament (over-extrusion, excessive oozing, thick layers),

• Feed too little filament (gaps in layers, weak layer adhesion).

How to Perform Calibration?

1. Measure the current filament feed:

   • Mark the filament 100 mm from the extruder entry point.

   • Execute the following command in Mainsail/Klipper:

     G1 E100 F100

   • Measure how much filament was actually pulled in. If it's not exactly 100 mm, calibration is needed.

2. Calculate the new e-steps value:

   • If, for example, the extruder only fed 95 mm instead of 100 mm:

     New e-steps = (Current e-steps × 100) / Measured length

3. Update in the firmware:

   SET_E_STEP_CALIBRATION VALUE=NEW_VALUE