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Solved Lift nozzle after G29 start code

Discussion in 'General Questions' started by xfire_dragonx, Jan 25, 2023.

  1. xfire_dragonx

    xfire_dragonx Member

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    Heyo, been a while since being here asking a question about my start code - did have my start code setup to have the nozzle lift after the G29 of my start code so that there's no dragging across the build area, Can't remember what code to use for this action.

    My start code:

    G21 ; set units to metric

    G28 X0 Y0 Z0 ; home all axis

    M565 Z-1.0 define Z offset at 1.0mm

    G1 Z5 F5000 ; lift nozzle

    G29 ; probe the bed

    thanks for the help..
     
    #1 xfire_dragonx, Jan 25, 2023
    Last edited: Jan 25, 2023
  2. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    G1 Z5 F5000 ; lift nozzle

    Lifts the nozzle 5mm
     
    #2 mark tomlinson, Jan 26, 2023
  3. xfire_dragonx

    xfire_dragonx Member

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    Should the G1 come after G29? Just want nozzle to lift and not drag on print bed.
     
    #3 xfire_dragonx, Jan 26, 2023
  4. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Yes, BUT if you do that then the leveling is off by whatever Z distance you add so before you actually commence printing GCode you need to drop the Z by that same amount.

    Better perhaps to tweak this number:

    M565 Z-1.0 define Z offset at 1.0mm
     
    #4 mark tomlinson, Jan 26, 2023
  5. xfire_dragonx

    xfire_dragonx Member

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    so my start code change would be this?

    G21 ; set units to metric

    G28 X0 Y0 Z0 ; home all axis

    M565 Z-1.0 define Z offset at 1.0mm

    G29 ; probe the bed

    G1 Z5 F5000 ; lift nozzle


    this time will save my code to a document lol
     
    #5 xfire_dragonx, Jan 26, 2023
  6. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Yes, that is a start. You then fine-tune the number in the M565 command as described in the FAQ. more or less negative in tiny increments to fine tune the offset for the perfect first layer
     
    #6 mark tomlinson, Feb 4, 2023

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