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

Solved Extruder heating up, then cooling back down when it starts to print.

Discussion in 'Troubleshooting' started by Demoux, Jan 29, 2016.

  1. WheresWaldo

    WheresWaldo Volunteer ( ͠° ͟ʖ ͡°)
    Staff Member

    Joined:
    Feb 18, 2015
    Messages:
    5,905
    Likes Received:
    3,593
  2. Demoux

    Demoux New Member

    Joined:
    Jan 29, 2016
    Messages:
    11
    Likes Received:
    0
  3. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
    Staff Member

    Joined:
    Feb 21, 2013
    Messages:
    23,912
    Likes Received:
    7,338
    You can solder that back together if you are handy with an iron.
    At least the thermistor itself is not broken. As you can see they are fragile :)
     
  4. Demoux

    Demoux New Member

    Joined:
    Jan 29, 2016
    Messages:
    11
    Likes Received:
    0
    They sure are. If I have any solder left back at home I will do a quick fix, but I will still order some new ones. Them being as fragile as they are, having some backups would be nice. Solder can get it working, but next time it breaks, I will at least be able to fix it pretty quickly. Thanks for all of your help. I am hoping this was the problem all along, and I didn't just accidentally break it while seeing if I could figure out what was wrong.
     
  5. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
    Staff Member

    Joined:
    Feb 21, 2013
    Messages:
    23,912
    Likes Received:
    7,338
  6. Demoux

    Demoux New Member

    Joined:
    Jan 29, 2016
    Messages:
    11
    Likes Received:
    0
    I would upgrade it, but it isn't my printer. I will more than likely buy my own at some point and do all of these things before I really start using it, but until then, cheap fixes will have to do.
     
  7. romero3d

    romero3d New Member

    Joined:
    Nov 9, 2015
    Messages:
    19
    Likes Received:
    5
    I have the same problem, plus my power supply make a noise all the time when printing. Where did you buy the power supply?
    Thanks
     
  8. WheresWaldo

    WheresWaldo Volunteer ( ͠° ͟ʖ ͡°)
    Staff Member

    Joined:
    Feb 18, 2015
    Messages:
    5,905
    Likes Received:
    3,593
  9. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
    Staff Member

    Joined:
    Feb 21, 2013
    Messages:
    23,912
    Likes Received:
    7,338
    Amazon has that same power supply style.
     
  10. romero3d

    romero3d New Member

    Joined:
    Nov 9, 2015
    Messages:
    19
    Likes Received:
    5
    Thanks Mark,
    I have problems with temperature, I order some thermistors from Amazon and I will try with a newone, the extruder drops down like 10 degrees and then come back, it do that all the time. Thats why i think it could be the power supply.
     
  11. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
    Staff Member

    Joined:
    Feb 21, 2013
    Messages:
    23,912
    Likes Received:
    7,338
    That is probably normal.
    One one of mine this happens when the Marlin auto-leveling routine is run.
    Seems as though Marlin does not maintain the target temp well to the hotend while doing the auto-leveling.

    Add the startup GCode to do the auto-leveling and THEN set the target temp. Even with Simplify3D (which tries to do the preheat to target before starting) this will avoid the TEMP FALL error.

    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
    M109 S[temperature] ; set the extruder temp and wait

    With Simplify3D you can do this instead:

    M109 S[extruder0_temperature] T0 ; tool 0 temp
     
  12. romero3d

    romero3d New Member

    Joined:
    Nov 9, 2015
    Messages:
    19
    Likes Received:
    5
    Thanks Mark,
    I did the change on startup and its working fine, when I set the temperature for PLA at 210, print the first two layers fine then when the cooling fan starts drop the temp to 204.9 and then go back to 210. Do you think this is a problem? Im printing a calibration box and still have some horizontal lines on the sides.

    Thanks again
     
  13. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
    Staff Member

    Joined:
    Feb 21, 2013
    Messages:
    23,912
    Likes Received:
    7,338
    If you are worried about it consider a 40w heater core.
    The E3D v6 comes with a 25w, the hexagon (I think) is a 30w, but you can buy 40w cores all over.

    example:

    http://www.amazon.com/gp/product/B0...heater core&qid=1456015473&ref_=sr_1_1&sr=8-1


    Cheap enough.
    Will get to temp quicker and stay there better.

    The original E3D (before v6) came with a 40w core and at some point they started using the smaller ones. I think the hex always used a smaller one. The volcano still comes with a 40w core.
     
  14. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
    Staff Member

    Joined:
    Feb 21, 2013
    Messages:
    23,912
    Likes Received:
    7,338
    The lines on the sides could be a lot of things, but not likely the extruder.
     

Share This Page