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Answered Fill issue with R1+

Discussion in 'Troubleshooting' started by Doug1289, Aug 6, 2018.

  1. Doug1289

    Doug1289 New Member

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    Replaced the hotend with a new OEM hotend directly from Robo 3D. This printer use to put out amazing prints. Now i am having some fill issues. It seems to lay down the first pass well but it seems to get a little mess from the second layer up. I have tried different filaments and i am at a loss. Nothing has changed other than the hotend. Any suggestions? Attached is a design i grabbed online to test.
     

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    #1 Doug1289, Aug 6, 2018
  2. Geof

    Geof Volunteer Moderator
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    Looks like it warped off the bed. May want to sanity check your z offset in your start up script and add some glue stick.
     
    #2 Geof, Aug 6, 2018
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  3. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    When replacing the hotend or even just the nozzle it is highly likely that your Z offset will get changed at least a little.
    Test and readjust that. like @Geof suggested.
     
    #3 mark tomlinson, Aug 6, 2018
  4. Doug1289

    Doug1289 New Member

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    It was fully adhered to the bed. I am still trying to get to the bottom of it. I will check out the startup script.
     
    #4 Doug1289, Aug 6, 2018
  5. Doug1289

    Doug1289 New Member

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    Am i going to sound totally clueless if i ask how i would go about doing that?
     
    #5 Doug1289, Aug 6, 2018
  6. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    trial and error.
    You should take a 1 layer model (like the one I attached here) and repeatedly test it with different autoleveling Z offsets defined until you get a layer that looks something like this: https://www.printedsolid.com/blogs/news/37035715-get-your-prints-to-stick-check-your-skirt

    The traditional way is to change the M565 command in your startup GCode to different values:

    G28 ; home all axes
    M565 Z-1.0 ; set the offset for auto-leveling mechanism, adjust as needed in small increments up/down
    G29 ; run auto-level
     
    #6 mark tomlinson, Aug 6, 2018
  7. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Some folks who use specific slicers have different ways to do it, but that is the generic way that works across all slicers.
     
    #7 mark tomlinson, Aug 6, 2018
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  8. Doug1289

    Doug1289 New Member

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    OK so i think i have found an issue. When attempting to print a single layer print i wont print. It heats up, it does its 9 point leveling where it probes the bed. Then once its done with the pre-printing it says its done with the print.

    My Start G-Code looks a little different.
    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
     
    #8 Doug1289, Aug 6, 2018
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  9. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Yea, no Z offset at all. Check the GCode terminal (where ever that is in your software) and see what errors the printer is sending back. That behavior is usually due to an error.

    Add the M565 after you get it printing again.
     
    #9 mark tomlinson, Aug 6, 2018
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