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Posted (edited) · 切片软件增加了多余的回抽代码

最近我在使用最新cura 12.1软件,它在打印机结束代码前面会自动增加一段长距离的回抽。



M104 S0

M140 S0

G92 E0

G1 E-10 F2000

G28 X0 Y0




G1 F1500 E112.5943

M140 S0

M204 S500





G1 F1500 E3768.34114
M140 S0
M204 S500






Edited by dgpower
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    Posted · 切片软件增加了多余的回抽代码

    The last E value before that line is E119.0943 and so that move to E112.5943 is your normal "Retract Distance" and doing a little math it is 6.5mm.  That is the normal situation when retraction is enabled in Absolute mode.  In your second example the E3768.34114 is probably "Retract Distance" less than the previous E value in that Gcode file.  Assuming that your retract distance was 6.5 for that file, that would make the previous E value 3774.84114.


    This is the Ending Gcode used by a lot of Creality printers.  It will work on your Anet.

    When Cura finishes calculating the Gcode it will add that final retraction...call it 6.5mm.  The code below will retract an additional 4mm and so at the end of a print the filament will be 10.5mm back from the nozzle.  That would need to be taken care of either by adding purge lines to the StartUp G-Code, or making sure a skirt/brim is long enough to "take up the slack".


    ;Ending Gcode

    G91 ;Relative positioning

    G1 E-2 F2700 ;Retract a bit

    G1 E-2 Z0.2 F2400 ;Retract and raise Z

    G1 X5 Y5 F3000 ;Wipe out

    G1 Z10 ;Raise Z more

    G90 ;Absolute positioning

    G1 X0 Y{machine_depth} ;Present print

    M106 S0 ;Turn-off fan

    M104 S0 ;Turn-off hotend

    M140 S0 ;Turn-off bed

    M220 S100 ;reset feedrate

    M221 S100 ;reset flowrate

    M84 X Y E ;Disable all steppers but Z

    ;End of the End Gcode

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    Posted · 切片软件增加了多余的回抽代码



    我用的3D Printer是Anet ET4X,我把存储卡重新格式化后,之前的打印结束后自动把料回抽超过200mm的问题就消失了





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