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Unresolved Extruder too close to print bed (I think)

Discussion in 'Troubleshooting' started by Dave (with an echo), Jan 14, 2016.

  1. Dave (with an echo)

    Dave (with an echo) New Member

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    Hi all,
    I have an issue with my Robo R1 printer. It's like the Extruder is too close to the print bed to let the filament through. The PLA extrudes when I push the filament through before hand. Then it drops the 9 beads before it prints. It then start to print without letting any filament through.
    Any suggestions on how to fix this would be very much appreciated.
    Dave
     
    #1 Dave (with an echo), Jan 14, 2016
  2. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    That is likely your Z offset is too low.

    I set mine in the startup Gcode (the M565):

    G28 ; home all axes
    G1 Z5 F5000 ; lift Z by 5mm
    M565 Z-0.6 ; set the offset for auto-leveling mechanism
    G29 ; run auto-level

    More negative is further from the bed (so -0.8 is further from the bed than -0.4).
    Play with it and see. You can easily do at least 1mm worth of adjustment this way.
     
    #2 mark tomlinson, Jan 15, 2016

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