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Help getting filament shaped
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Michael Despault
Dec 15, 2021
I'm at this step right now as well. I'm pretty consistently able to load filament with any of the 4 gears, but the unloading is still problematic. Specifically, it tends to get stuck when the tip gets to the extruder (can't grip) and I'm guessing I need to shape the filament better. I don't fully understand the generated g-code for unloading. ie: G0 E-50 F2000 ; quickly retract the filament to shape it G0 E-80 F600; slowly allow it to cool   G0 E1 F2000 ; blob elimination   G0 E-50 F2000 ; quickly retract the filament to shape it G0 E-80 F600; slowly allow it to cool   G0 E1 F2000 ; blob elimination G0 E-10 F2000 ; quickly retract the filament to shape it G0 E1 F2000 ; quickly ram the filament to shape it G0 E-10 F2000 ; quickly retract the filament to shape it G0 E1 F2000 ; quickly ram the filament to shape it   G0 E-50 F2000 ; quickly retract the filament to shape it G0 E-80 F100; slowly allow it to cool My understanding of the above code is that it retracts the filament by 50mm quickly, then another 80mm slowly... then it pushes forward 1mm? to eliminate blobs? I don't yet understand why you would want to retract 50+80 and then only move it forward 1mm after it has cooled. It then does seem to repeat the same process but I guess the "G0 E1 F2000" throws me off since the filament would be only moving back such a small amount? I can fix the distances to be specific to my extruder/hot end distances (it's bowden tube, not direct drive) but what is the generator trying to accomplish so I can modify it?
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Michael Despault
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