The extruder settings can be misleading - on your settings, if you hit "extrude" it will
pump 5mm of plastic. If you hit "reverse", it will
suck 5mm of plastic. Under the reverse button is the speed the extruder motor will move if
either button is pressed (extrude or reverse). You have yours set at 30mm/min which is way too slow - it may be a typo of course. If not, set it to 300mm/min
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Waitaki 3D Printer