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Solved first couple layers are bad

Discussion in 'Troubleshooting' started by David Avila, Sep 13, 2017.

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  1. David Avila

    David Avila Member

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    I have been printing for about 1 year and just got this issue, I have two r1 an this one is giving this issue with the first couple layers, please help thanks IMG_1837.jpg IMG_1835.jpg IMG_1836.jpg
     
    #1 David Avila, Sep 13, 2017
  2. Geof

    Geof Volunteer Moderator
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    looks like a z offset issue. may want to test to get that dialed back in. Also make sure your x is level with your y axis.
     
    #2 Geof, Sep 13, 2017
  3. WheresWaldo

    WheresWaldo Volunteer ( ͠° ͟ʖ ͡°)
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    May also be a very slight under-extrusion.
     
    #3 WheresWaldo, Sep 13, 2017
  4. David Avila

    David Avila Member

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    any links on how to do that, thanks
     
    #4 David Avila, Sep 13, 2017
  5. Geof

    Geof Volunteer Moderator
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    the Z offset should be defined in your start up script.
    G28 ;
    M565 Z-x.xx ; set the offset for autolevel
    G29 ;

    The Z-x.xx is the number you tweak to dial that in.

    Waldo had a good point that it could be under extrusion.

    To verify the x is level with the y home the machine (x,y and Z) lift z until a piece of paper just fits between the nozzle and bed. Move nozzle to other side of the bed and check that the paper fits the same. Does it?
     
    #5 Geof, Sep 13, 2017
  6. David Avila

    David Avila Member

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    This is what I have now

    G28 X0 Y0 Z0 ; home all axes
    G1 Z5 F5000 ; lift nozzle
    M109 S[temperature] ; set the extruder temp and wait
    G28 X0 Y0 Z0 ; Home Z again in case there was filament on nozzle
    G29; probe the bed
    M201 X500 Y500 Z500 E1000;
     
    #6 David Avila, Sep 13, 2017
  7. Geof

    Geof Volunteer Moderator
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    how are you setting your z offset then?
     
    #7 Geof, Sep 13, 2017
  8. David Avila

    David Avila Member

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    ok this is it

    G92 E0 ;
    M565 Z-1 ;
    G1 Z5 F5000 ;
    G29 ;
    M201 X500 Y500 Z500 E1000;
     
    #8 David Avila, Sep 13, 2017
  9. Geof

    Geof Volunteer Moderator
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    I think I'd just put ( in there at all)

    G28 ; home all axis
    M565 Z-1.0; set offset for autolevel
    G29 ; dance

    Keep in mind that Z-1.0 is default. Your numbers will need to be found by testing and changing. What slicer are you using?
     
    #9 Geof, Sep 13, 2017
  10. David Avila

    David Avila Member

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    Cura on mattercontrol
     
    #10 David Avila, Sep 13, 2017
  11. Geof

    Geof Volunteer Moderator
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    I dont know what matter control does (if anything) to specify a Z offset. Its a bit of a wierd slicer but give that starting script a shot and let us know what you find.
     
    #11 Geof, Sep 13, 2017
  12. David Avila

    David Avila Member

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    If not I'll use Cura, maybe that will fix the issue. Mattercontrol seems to be limited
     
    #12 David Avila, Sep 13, 2017
  13. David Avila

    David Avila Member

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    ok so on matter control this fixes the issue with the M565 Z, this made the print perfect. Thanks for the help

    G28 X0 Y0 ; home all axes
    G1 Z5 F5000 ; lift Z by 5mm
    M565 Z-0.4 ; set the offset for auto-leveling mechanism
    G29 ; run auto-level
    M201 X500 Y500 E1000;
     
    #13 David Avila, Sep 14, 2017
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  14. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Good job. Everyone's Z number will be slightly different.
     
    #14 mark tomlinson, Sep 14, 2017
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