Extruder Calibration Guide (Rotation Distance/E-Steps)
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Tool to help calibrating the 'rotation distance' or e-'steps' of an extruder. Tested with Voron ClockWork 2.
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- Printables
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- Creative Commons — Attribution — Noncommercial
I recently wanted to calibrate my ClockWork 2 extruder with some filaments and did a lot of measurements. To simplify the process I created this guide to help with the usual “measure 120mm, extrude 100mm, measure 20mm and see how far it's off”.
You can use tape or a marker to mark the filament. If using tape be sure that your extruder is not way of so that the tape is pulled into the extruder.
It is designed to fit into the Voron ClockWork 2 extruder input shaft but may work with other extruders, too.
Since 3D printing is often not very precise there are no marks on the guide itself. You rather have to create that marks once with an Edding, Sharpie or similar permanent marker.
Printed with the default BambuLab PLA profile on an X1C in about 30 minutes.
Just in case that you don't have the g-code at hand:
M83 ; Set extruder in relative mode
G1 E100 F60 ; Extrude 100mm with 1mm/sThen calculate the new rotation_distance/e-step value after extrusion:
difference = 120 - measured_lengthnew_rotation_distance_value = old_rotation_distance_value * (difference / 100)
new_e_step_value = old_e_step_value * (difference / 100)
Use at your own risk.