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Unresolved Extruder chewing up PLA like crazy

Discussion in 'Troubleshooting' started by terpbeard, Jan 4, 2017.

  1. WheresWaldo

    WheresWaldo Volunteer ( ͠° ͟ʖ ͡°)
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    PLA, perhaps remove the nozzle and torch it red hot to burn out any residual particles that may be impeding flow.
     
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  2. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    It is more likely something in common.
    If you have a spare nozzle try that.

    edit: and @WheresWaldo is correct with that approach as well. You will need to re-season after that.
     
  3. terpbeard

    terpbeard New Member

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    I don't have a spare unfortunately. I dropped the hot end earlier when tinkering with things but I didn't take the nozzle itself off. Do I just put a wrench on the nozzle itself and one on the hot end? Or is there a tiny screw or something I need to pull for the nozzle?
     
  4. WheresWaldo

    WheresWaldo Volunteer ( ͠° ͟ʖ ͡°)
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    Video here:


    Hexagon is the same.
     
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  5. WheresWaldo

    WheresWaldo Volunteer ( ͠° ͟ʖ ͡°)
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  6. terpbeard

    terpbeard New Member

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    My extruder just broke off inside of my hot end (the threads)
     
  7. terpbeard

    terpbeard New Member

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    Broke right off without much force, now I'm really screwed. i'm not even sure how I'll get the threads out of my hot end.
     

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    #27 terpbeard, Jan 12, 2017
    Last edited: Jan 12, 2017
  8. WheresWaldo

    WheresWaldo Volunteer ( ͠° ͟ʖ ͡°)
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    Fortunately you can buy new heater blocks as well as nozzles with Amazon Prime and depending on where you live can sometimes get same day delivery.
    Blocks from Amazon
    Nozzles from Amazon

    These were just the first ones that came up for me with Prime. No endorsement implied.
     
  9. terpbeard

    terpbeard New Member

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    Thanks for your help, having to wait on shipping - even a couple days is really going to hurt me. I can't believe everything I've already had to go through with this thing and it's not even two weeks old.

    I can't wrap my head around them not changing out the tip at least on a refurbish if not the whole block and tip, with how little the tips cost and how easily they clog I really can't believe that.
     
  10. WheresWaldo

    WheresWaldo Volunteer ( ͠° ͟ʖ ͡°)
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    Sorry, I can't opine on anything refurbished from Robo.

    Most veterans here will keep at least one spare of every critical part. I have at least 10-12 nozzles already seasoned ready to go at any given time. I have a spare kit that is the entire electronics package of RAMP/Arduino/Stepper drivers/LCD Controller. I even have a single replacement NEMA-17 motor. But I don't do anything time critical, so I don't mind waiting on shipping.

    @Geof on the other hand, uses his printers in production so I bet he has a trunkload of spare parts.
     
  11. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Everyone has a learning curve... trust me yours is not (quite) as painful as some :)

    Like I said we don't "know" what they do to a refurb, but my suspicion is as little as possible.
    <shrug> a business choice.

    Probably (at best) they test it and if it is working (extruding) they are done.
     
  12. terpbeard

    terpbeard New Member

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    Yes you are right, a business choice - a poor one. I'm upset that I gave them my business if that's all they care about customers. This extruder was clearly never right from the time I got the unit.
     
  13. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    This is the risk with refurbs, not sure what sort of warranty you have, but use it if you can.
    At least the replacement is not expensive. Time consuming though ...
     
  14. Geof

    Geof Volunteer Moderator
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    I have literally every part including spare wiring pre made up ready to drop in. (multiple boards/drivers, 2 sets of steppers, full wiring cut to length for my machine, spare bed, spare E3DV6 and a promethius as well as the 3 hexagons I use to use, nozzles, spare LCD, rods, bearings, bushings, leadscrews, ....yea....all of it lol. But when I go down, its not for more than an hour or so :D
     
  15. Geof

    Geof Volunteer Moderator
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    we are all users so I cant speak for Robo, but all of us here will go the extra mile to help out :D. The hexagon hotends in my opinion are throw away. They arnt meant to be fixed, just when they break...ditch em lol. Doing "refurbished" is a good way to get some money out of returns that would otherwise be trash from a buisness perspective but who knows the process or if a knowledgeable tech is doing the work or if its a temporary employee with a check list that has never seen a printer before. Its a crap shoot in my opinion, but they are cheap to fix and there is alot of information here to get you there :D
     
  16. terpbeard

    terpbeard New Member

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    How do I separate these two pieces to replace the heat block?
     

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  17. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Very carefully.

    Heat it up and use two wrenches. One on the heater block and one on the finned section.
    If you have a really small one you can use one on the heat break and the other on the heater block.

    Take care not to break the heat break.
     
  18. terpbeard

    terpbeard New Member

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    It just turns and turns as though I have to have a tiny one on the heat break, and unfortunately I don't have a wrench that tiny
     
  19. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    It could be stripped.
    Sadly with the hexagon you can't just buy parts.
     
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  20. terpbeard

    terpbeard New Member

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    I gripped the hell out of the heat break with needle nose and torched the heat block for a long time and got it!
     

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