Speed movement after prime

Discussion in 'Getting Started' started by blarbles, Nov 30, 2019.

  1. blarbles

    blarbles Well-Known Member

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    Is there a way to speed up the tool movement after prime as it is moving to print to the bed from the prime location? Seems to move much slower than pre-prime.
     
  2. Greg Holloway

    Greg Holloway Administrator
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    Probably. look at the prime.g and purge.g scripts. They may have the answer.
     
  3. blarbles

    blarbles Well-Known Member

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    I do not see anything in prime.g and purge.g (I don't use purge). The brush out has:

    Code:
    G1 X-41.5 Y125 F50000
    Which is very fast, but whatever tells the print head to move back to the build plate after the brush movement and start printing is quite slow. Maybe this is a question for DUET?
     
  4. Greg Holloway

    Greg Holloway Administrator
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    check the config.g file?
     
  5. Amr

    Amr Well-Known Member

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    can you share your first few gcode lines from the file you are trying to print
     
  6. blarbles

    blarbles Well-Known Member

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    I skipped everything before because it is just gcode for heating, absolute coordinates, units to millimeters, etc. Nothing related to speed.

    Are you thinking if I throw in a:
    G1 F50000 somewhere at the start, then that first movement will fast and then it will reset back to 1800 right before the printing X/Y movements?

    Code:
    T0
    ; Filament gcode
    G1 Z0.350 F7800.000
    G1 E-1.00000 F2400.00000
    G1 Z0.950 F7800.000
    G1 X123.268 Y130.609
    G1 Z0.350
    G1 E1.00000 F2400.00000
    G1 F1800
    G1 X123.629 Y130.573 E0.01821
     
  7. Amr

    Amr Well-Known Member

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    that is the start of my gcode I see you have a g1 1800 before printing maybe thats why
    Code:
    G28
    G29
    G29 S1
    T3
    G21 ; set units to millimeters
    G90 ; use absolute coordinates
    M83 ; use relative distances for extrusion
    M900 K200 ; Filament gcode
    G1 Z0.200 F9000.000
    G1 E-5.00000 F1800.00000
    G1 Z1.200 F9000.000
    G1 X94.696 Y73.614
    G1 Z0.200
    G1 E5.10000 F1800.00000
    G1 F2400
    G1 X96.071 Y71.862 E0.10316
    
     
  8. Amr

    Amr Well-Known Member

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    this should be the non print move speed in your slicer
     
  9. Beat

    Beat Active Member

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    Might also be a hardcoded part in one of your slicer scripts
     
  10. dc42

    dc42 Well-Known Member

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    Try using G1 R2 X0 Y0 Fxxxx at the end of your tpost files. Keep the F parameter low until you are sure that it is working.
     

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