Wade Bowden Extruder 1.75 filament

To achieve a good printing quality you must have a good extruder.
Bowden extruder for 1.75 mm plastic with M5 or M6 Pneumatic fit and
PTFE Tube 2x4mm.
I use 0.4 Nm stepper motors and DRV8825 driver.
Nozzle = 0.4 mm
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microstepping = 32
steps per unit = 1200
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microstepping = 16
steps per unit = 600
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microstepping = 8
steps per unit = 300
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