Filament extrusion calibration stick
thingiverse
I got tired of trying to get the measurements needed to calibrate my extrusion stepper motor, so I made this simple stick. The marks are indented so they will last, and also double as a way to accurately mark the filament. Overall length is the recommended 120mm, with marks every 1mm and larger marks at every 5mm up to 75mm. Past that, you got other issues than simple calibration. Highly recommend you first get your printer dialed in, so that accuracy is at it's peak when making this.
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