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Partially Solved What's the little fan on the right side of extruder assembly.

Discussion in 'Troubleshooting' started by gunsmoke132, Apr 5, 2017.

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  1. gunsmoke132

    gunsmoke132 Member

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    I was essentially wondering what it was and what it did because it stopped working and I wanted to know if it should be repaired immediately or if I can hold out on it
     
    #1 gunsmoke132, Apr 5, 2017
  2. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    If it is mounted to the extruder it is important and should always be running*.
    If it is mounted on the rails and aimed at the part you are printing it is software controlled.



    *if you print without it on a small all-metal hotend like the Hexagon or E3D then heat creep will kill your print :) You will clog up and jam....
     
    #2 mark tomlinson, Apr 5, 2017
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  3. gunsmoke132

    gunsmoke132 Member

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    Do you know what I should search for to replace it?
     
    #3 gunsmoke132, Apr 5, 2017
  4. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Good Luck with that.
    The heaxgon parts (other than E3D compatible nozzles) are not generally available. You usually have to purchase the entire hotend.

    Under warranty contact Robo.

    Out of warranty you can look for a 30mm x 30mm x 10mm 12vdc fan (I think it is 30mm -- do not have one handy to measure @Geof might know)
     
    #4 mark tomlinson, Apr 5, 2017
  5. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    You might ping Robo any way since it is a cheap part you never know...
     
    #5 mark tomlinson, Apr 5, 2017
  6. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Actually, if you search on thingiverse, people have made 40mm fan adapter mounts and you certainly can get 40mm x 40mm x 10mm fans on Amazon

    http://www.thingiverse.com/thing:1124054

    That is one and since it is for 40mm -> 25mm I am guessing I was wrong and the hexagon fan is 25mm not 30mm :)
     
    #6 mark tomlinson, Apr 5, 2017
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  7. gunsmoke132

    gunsmoke132 Member

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    How am I going to print an adapter for it if the fan is fried? I'm honestly starting to hate this printer...
     
    #7 gunsmoke132, Apr 5, 2017
  8. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Someone would be happy to print one for you :) You just have to wait for it to arrive.
    If you can print one yourself it is faster. I would say give it a try with an external fan blowing on the printer bed/hotend. It is not a long print (even shorter if you use 0.2 or 0.3 mm layer heights). Even without the fan you may get lucky and get it done since it is not a huge model.

    And as mentioned in the first posts call Robo and see if they can't get you one...
     
    #8 mark tomlinson, Apr 5, 2017
  9. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    It has been said many times in the forum, print spare bits while the printer is working :)
    If it is on the printer and made of plastic ... print a spare.
     
    #9 mark tomlinson, Apr 5, 2017
  10. Geof

    Geof Volunteer Moderator
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    Hex fan is 25x25x10 stock.
     
    #10 Geof, Apr 5, 2017
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  11. Geof

    Geof Volunteer Moderator
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    Zip tie a fan to the extruder. Should do well enough to get you through the 30 mi ute print
     
    #11 Geof, Apr 5, 2017
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  12. gunsmoke132

    gunsmoke132 Member

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    I tried printing an adapter and failed. Any idea on how to unclog it. It's pla
     
    #12 gunsmoke132, Apr 9, 2017
  13. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Do an atomic pull.
    What is that you might ask?

    Using PLA...

    Open the filament feed entirely Remove the two spring-loaded screws and drop the hinge back so you can see the hole the hobb pushes the filament into.
    Heat the nozzle to 240c and push some filament in by hand as far as you can. If it starts feeding out the nozzle you are done, otherwise...
    Drop the hotend temperature to about 85c and when it is stable pull the filament back out of the hole. This may take some force... This will most likely clear it. If not, do it a couple of times.

    When done you should be able to reassemble and refeed filament and have it extrude.
     
    #13 mark tomlinson, Apr 9, 2017
  14. gunsmoke132

    gunsmoke132 Member

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    New question. What are the little black connectors called? I lost the female end of the fan.
     
    #14 gunsmoke132, Apr 9, 2017
  15. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    JST connectors. You will need to go looking on Amazon to get the exact model, but that will get you going.

    I do not have one to look at, but I think they are similar to the JST SM style
     
    #15 mark tomlinson, Apr 9, 2017
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  16. Robert55

    Robert55 Member

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    While we're talking connectors, what about the ones to the stepper motors?? I've re-crimped the one on the extruder 3 X now. Ain't got much life left... :(

    Sent from my LGLS996 using Tapatalk
     
    #16 Robert55, Apr 9, 2017
  17. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Upload a picture of the connector you are talking about.
    The ones from the steppers are likely not JST
     
    #17 mark tomlinson, Apr 9, 2017
  18. Robert55

    Robert55 Member

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    I'm printing right now. 6 slots, 4 wires used - 2 in the center and 2 on the outside.

    Sent from my LGLS996 using Tapatalk
     
    #18 Robert55, Apr 9, 2017
  19. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    #19 mark tomlinson, Apr 9, 2017
  20. Robert55

    Robert55 Member

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    Got it. I think.[​IMG]

    Sent from my LGLS996 using Tapatalk
     
    #20 Robert55, Apr 9, 2017
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