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Filament retract during "Lift Head" for "Minimum Layer Time" in Cooling


BarraVox
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Posted · Filament retract during "Lift Head" for "Minimum Layer Time" in Cooling

Hi

 

I have selected Lift Head to maintain Minimum Layer Time in the Cooling section however while lifted I am getting oozing because the filament is not retracted. That is making a mess on the print.

 

Enable Retraction is set in the Travel section.

 

How can I get retraction during the Lift Head ?

 

Cura Version 5.0.0

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    Posted · Filament retract during "Lift Head" for "Minimum Layer Time" in Cooling

    In 5.0 and 5.1 you get something like this:

    G1 F1500 X106.692 Y105.679 E230.0867 ;> Last extrusion
    G0 F9000 X106.692 Y106.2
    ;MESH:NONMESH
    G0 F600 X106.692 Y106.2 Z1.04
    G0 F9000 X105.87 Y105.87
    G0 X105.6 Y105.6
    ;Small layer, adding delay
    G1 F2100 E225.0867 ; > Retract 5.0 if there was no retraction since last extrusion
    G0 F9000 X105.6 Y105.6 Z4.04
    G0 X119.742 Y119.742
    G4 P48796  ; > dwell is dependent on Actual Layer Time, Min Layer time, and Min Speed.

     

    There were a couple of instances in the gcode where there was no retraction within the "Small layer, adding delay" section.  In all of those cases there was a retraction directly after the last extrusion and so a second retraction wasn't desired.

     

    If you open the gcode file in a text editor and search for "G4" you will see the delay sections.  If there is no retraction within the little section then look above for the last extrusion.  There should be a retraction right after it.

    If your "Max Combing Distance with no Retract" is too high, or if the "Retraction Minimum Travel" is too high then maybe there wouldn't be a retraction(?)

     

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