Recalibrate Extruder.txt

M503 ; get current settings 

; Cut 150MM from bottom of feeder

G92E0 ; Reset Extruder
G1E100F30 ; Extrude 100 MM at 30mm/min

; Measure Again

; Length Actually Pushed Through
; 150-61.2 = 88.8mm (C)

; Recalculate New Value
; ( A * 100 ) / C
; A = Old Steps Per MM (Default  Steps Per MM 282.00)
; C = Actual Extruded Length (see above)

M92E318 ; Temporarily Set New Steps Per MM (or do it in tinker menu motion settings)

M500 ; Remember new values / Save

; Hobbled Gear = 318 Steps Per MM

; Get average diameter of filament