Introduction
Extruder calibration is critical to quality print results. In order to complete calibration, you will be extruding a known length of filament from the extruder and measuring it as accurately as possible. Calipers make the job easy, but a ruler with mm divisions will work fine. Just note if you are using calipers, 1/10th mm is probably more than accurate for this purpose.
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Open your printer.cfg file in your preferred method. SSH and Nano work very well for this, but WinSCP is a viable method as well.
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Locate the [extruder] section.
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Take note of the step_distance value. You are going to need this in later steps.
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test
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