1. Got a question or need help troubleshooting? Post to the troubleshooting forum or Search the forums!

Solved Overextruded layers

Discussion in 'Troubleshooting' started by Hp0106, Jun 21, 2016.

Thread Status:
Not open for further replies.
Page 1 of 2
  1. Hp0106

    Hp0106 Member

    Joined:
    Feb 28, 2016
    Messages:
    31
    Likes Received:
    7
    image.jpeg Hey guys,
    I've run into a problem where some of my layers are bulging or look like the printer overextruded. I have tried using an oiler, high quality filament(for tighter tolerances), and lubricating all of the aluminum rods and leadscrews. Your ideas and suggestions are appreciated.
     
    #1 Hp0106, Jun 21, 2016
  2. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
    Staff Member

    Joined:
    Feb 21, 2013
    Messages:
    23,912
    Likes Received:
    7,338
    1) Calibrate the extruder



    2) Check that there is no slop in the movement (i.e.a loose belt or a loose drive gear for the belt on the motor shaft)
     
    #2 mark tomlinson, Jun 21, 2016
  3. Hp0106

    Hp0106 Member

    Joined:
    Feb 28, 2016
    Messages:
    31
    Likes Received:
    7
    Thanks for the quick reply. I will calibrate the extruder and I know the belts are fine but how do I check the drive gears for slop?
     
    #3 Hp0106, Jun 21, 2016
  4. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
    Staff Member

    Joined:
    Feb 21, 2013
    Messages:
    23,912
    Likes Received:
    7,338
    It is a little harder. The easiest way is to hold the motor shaft and try to move the belt both directions. See if the cog slips any.
     
    #4 mark tomlinson, Jun 21, 2016
    Geof likes this.
  5. Hp0106

    Hp0106 Member

    Joined:
    Feb 28, 2016
    Messages:
    31
    Likes Received:
    7
    Belts are tight and no slipping on the drive gears. I'm about to calibrate the extruder. Thanks for the help so far.
     
    #5 Hp0106, Jun 21, 2016
  6. Hp0106

    Hp0106 Member

    Joined:
    Feb 28, 2016
    Messages:
    31
    Likes Received:
    7
    Alright I have my new E-steps and I'm ready to put them in. In the video he talks about using gcode commands or recompiling to save the new steps. Could I just use Mattercontrol's EE-prom configuration to update my new steps?
     
    #6 Hp0106, Jun 21, 2016
  7. Geof

    Geof Volunteer Moderator
    Staff Member

    Joined:
    Nov 9, 2015
    Messages:
    6,757
    Likes Received:
    2,339
    I wouldnt use eeprom id use the firmware
     
    #7 Geof, Jun 21, 2016
  8. Ryan TeGantvoort

    Ryan TeGantvoort Active Member

    Joined:
    Mar 11, 2016
    Messages:
    343
    Likes Received:
    172
    You could use EEPROM for now but when you get the magic number I would definitely store it in the Firmware, so it doesn't get lost!
     
    #8 Ryan TeGantvoort, Jun 21, 2016
  9. Hp0106

    Hp0106 Member

    Joined:
    Feb 28, 2016
    Messages:
    31
    Likes Received:
    7
    Alright firmware has been uploaded to the printer. I'm running a test print now. Thanks for the help guys I'll share my results later.
     
    #9 Hp0106, Jun 21, 2016
  10. Hp0106

    Hp0106 Member

    Joined:
    Feb 28, 2016
    Messages:
    31
    Likes Received:
    7
    image.jpeg It seems that the problem is still there but is slightly better. I'm still open to suggestions. Thank you guys so much for your help.
     
    #10 Hp0106, Jun 21, 2016
  11. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
    Staff Member

    Joined:
    Feb 21, 2013
    Messages:
    23,912
    Likes Received:
    7,338
    If the bulging layers are bulging all the way around then it is still over extruding.
    If they are only bulging on one side then you may have a slip on that that axis (X or Y).
    If it is slip then it almost has to be the drive gear (not the belt) because that is a really small deviation.
    Belt slip is normally larger than that, but if the set screw is not tight on the drive cog that can cause really small defects.
     
    #11 mark tomlinson, Jun 22, 2016
    Ryan TeGantvoort and Geof like this.
  12. Ryan TeGantvoort

    Ryan TeGantvoort Active Member

    Joined:
    Mar 11, 2016
    Messages:
    343
    Likes Received:
    172
    What material and temps are you using? Is the bulge appearing where its starting a new layer? I would definitely be testing/calibrating on a slightly smaller model!
     
    #12 Ryan TeGantvoort, Jun 22, 2016
  13. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
    Staff Member

    Joined:
    Feb 21, 2013
    Messages:
    23,912
    Likes Received:
    7,338
    Given what we see I don't *think* that can be the case, still...worth asking.

    Bingo! That I am 100% in favor of :)
    It looks like it is reproducing often enough that a smaller model can be used to test with.
     
    #13 mark tomlinson, Jun 22, 2016
    Ryan TeGantvoort likes this.
  14. 3D Printer Man

    3D Printer Man Guest

    Joined:
    May 21, 2016
    Messages:
    226
    Likes Received:
    57
    #14 3D Printer Man, Jun 22, 2016
  15. Hp0106

    Hp0106 Member

    Joined:
    Feb 28, 2016
    Messages:
    31
    Likes Received:
    7
    image.jpeg I have printed the calibration cube and it does look much better. I don't think the bulge is from a new layer because of reoccurrences on the same layer. Material is pla and speed is only 30 mm/s.
     
    #15 Hp0106, Jun 22, 2016
  16. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
    Staff Member

    Joined:
    Feb 21, 2013
    Messages:
    23,912
    Likes Received:
    7,338
    It does look better, with maybe... maybe a hint of one midway up the right side.
    The defects from a common starting point are pretty obvious... they will all line-up the length of the Z usually. Random start points is a good thing.

    That really does look like a small amount of over-extrusion, but much better than what you started with.
     
    #16 mark tomlinson, Jun 22, 2016
    Ryan TeGantvoort likes this.
  17. 3D Printer Man

    3D Printer Man Guest

    Joined:
    May 21, 2016
    Messages:
    226
    Likes Received:
    57
    Try using different resolutions, maybe, if their is an issue maybe z-wobble.
     
    #17 3D Printer Man, Jun 22, 2016
  18. Ryan TeGantvoort

    Ryan TeGantvoort Active Member

    Joined:
    Mar 11, 2016
    Messages:
    343
    Likes Received:
    172
    Looks like it overshot the closest corner towards the bottom as well. That does look quite a bit better but its also a square, which you could bet getting mixed results going from a cylinder to a square. Just a thought.

    It just seems odd to be over-extrusion when it is so random.

    Could this have something to do with a partial nozzle clog? Creating inconsistent extrusion?
     
    #18 Ryan TeGantvoort, Jun 22, 2016
  19. Brian Robo 3D

    Brian Robo 3D Guest

    Try printing at 200 degrees and compare the difference if you haven't already.

    Also change the cooling time per layer to 17 seconds. That option is under Filament > Cooling > Slow Down If Layer Print Time Is Below ... It won't slow down below 10mm/sec

    Last thing you can try printing with a different spool of filament just to rule that out.
     
    #19 Brian Robo 3D, Jun 22, 2016
  20. Hp0106

    Hp0106 Member

    Joined:
    Feb 28, 2016
    Messages:
    31
    Likes Received:
    7
    Lots of suggestions to try. Thank you everybody I would never have thought to try any of this on my own. I will try fully clearing the nozzle and see what that does. I will also try different resolutions and temperatures. If none of that works I have a fresh spool on the way to try out and I will post the results after I'm finished.
     
    #20 Hp0106, Jun 22, 2016
    Ryan TeGantvoort likes this.
Page 1 of 2
Thread Status:
Not open for further replies.

Share This Page