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Unanswered Prints failing after first layers.

Discussion in 'Troubleshooting' started by Spencer C, Apr 30, 2015.

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  1. Spencer C

    Spencer C New Member

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    i need some major help. My printer will print the first base layers perfectly but once it gets to a certain height it goes haywire and the distance is wrong. Any help is appreciated.
     

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    #1 Spencer C, Apr 30, 2015
  2. Spencer C

    Spencer C New Member

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    Better pics. After the first layers the hot end seem to start printing too high and just drizzles the plastic instead of what it should do. ImageUploadedByTapatalk1430452395.518652.jpg ImageUploadedByTapatalk1430452405.821090.jpg


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    #2 Spencer C, Apr 30, 2015
  3. Stephen Capistron

    Stephen Capistron Active Member

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    I'm not sure what I'm supposed to be looking at in these pictures so I will just give some general pointers.

    - MatterControl is not the most robust program. A lot of us use cura, repetier, or simplify3d($).

    - The USB connection on the robo is also not very good. A lot of people print from the SD card slot and/or have installed an LCD controller. I've had good luck by literally bolting my cable into position, I can probably pick the printer up by its USB cable. And still others have reported that switching to a higher quality capable has done the trick.

    - Make sure your threaded rods and firmware match. Count off the number of threads per inch. If it is 18 you have 5/16 rods. If it is around 21 you have M8 rods. Flash the correct firmware to your arduino.

    - If printing with PLA use an oiler or season your hot end. It really makes a big difference.
    http://community.robo3d.com/index.p...hotend-jam-clogs-seasoning-and-an-oiler.3564/

    - The sample filament that comes with the robo is not very good.
     
    #3 Stephen Capistron, May 1, 2015
  4. ToyDesigner

    ToyDesigner Member

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    I had same problem the sample filament it was hit or miss and would give out on second layer 3 out of 4 times, when switched to hatchbox filament and it fixed the issue
     
    #4 ToyDesigner, May 1, 2015
  5. Spencer C

    Spencer C New Member

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    I think it could be communication. A small cube prints just fine but any other larger file gets messed up. I will also switch out filament


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    #5 Spencer C, May 1, 2015
  6. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Either add a powered USB hub or print from the SD card. Those will help sort out communications issues.
     
    #6 mark tomlinson, May 1, 2015
  7. Spencer C

    Spencer C New Member

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    Better pictures. The first layer go down like butter, but once it gets to a certain point it just drizzles it all over but still following the right path. Going to try SD CARD but having hard time getting it to seat in the slot properly. ImageUploadedByTapatalk1430502798.476017.jpg ImageUploadedByTapatalk1430502807.948826.jpg


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    #7 Spencer C, May 1, 2015
  8. jbigler1986

    jbigler1986 Active Member

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    first layer is a tiny bit to high. the lines should smash together nice and smoothly. you have a small gap in between the lines. Look at this picture. See how the lines are smashed together.
    [​IMG]
     
    #8 jbigler1986, May 1, 2015
  9. Spencer C

    Spencer C New Member

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    How should I fix that?


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    #9 Spencer C, May 1, 2015
  10. jbigler1986

    jbigler1986 Active Member

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    What software are you using?
     
    #10 jbigler1986, May 1, 2015
  11. Spencer C

    Spencer C New Member

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    Matter control for now.


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    #11 Spencer C, May 1, 2015
  12. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Your initial Z offset would need to be adjusted.
     
    #12 mark tomlinson, May 1, 2015
  13. David BOles

    David BOles Member

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    To change the Z offset, modify your M565 command. My start gcode is:

    G1 Z5 F5000 ; lift Z by 5mm
    G28 ; home all axes


    M565 Z-0.75; set the offset for auto-leveling mechanism


    G29 ; run auto-level
    M300 S440 P200 ;A4: 440
    G0 Z5
     
    #13 David BOles, May 1, 2015
  14. Mike Kelly

    Mike Kelly Volunteer

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    You should only modify the start g-code if you're running cura engine in matter control (or repetier but don't worry about this for now)

    Slic3r and MatterSlice both have Z offset values pre-defined as 1.0. Adjusting this is a safer bet. Shows up under the Printer > General option in slice settings
     
    #14 Mike Kelly, May 1, 2015
  15. David BOles

    David BOles Member

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    Sorry, forgot about that. You should use the slicer option if not using cura for sure.
     
    #15 David BOles, May 1, 2015
    Last edited by a moderator: May 1, 2015
  16. Spencer C

    Spencer C New Member

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    Ok will be trying these things tonight.


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    #16 Spencer C, May 1, 2015
  17. Printed Solid

    Printed Solid Volunteer Admin
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    alright, while we've got some good general advice going on here...

    There is something wrong with your gcode. It is extruding properly, but in weird places. The likely cause of this is that there is something wrong with the stl file. My guess is that you have internal features and possibly some overlapping shells. run it through netfabb. personally, I prefer the download, but someone on here has been chiming in wherever possible that there is also a cloud solution.

    If you'd like to post the STL, I'd be glad to check it out and report what is going on.
     
    #17 Printed Solid, May 1, 2015
  18. Spencer C

    Spencer C New Member

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    Doing a test print now with new filament and using slic3r settings in matterslice. So far I think the overlap is better. Sorry I'm using black filament ImageUploadedByTapatalk1430524953.968592.jpg


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    #18 Spencer C, May 1, 2015
  19. Spencer C

    Spencer C New Member

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    Update: print nozzle is now dragging along the previous layer. ImageUploadedByTapatalk1430525935.131218.jpg causing what is seen in the pic.


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    #19 Spencer C, May 1, 2015
  20. Spencer C

    Spencer C New Member

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    Does this mean my z setting is now too low!


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    #20 Spencer C, May 1, 2015
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