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

Layers are no longer bonding

Discussion in 'General Questions' started by Trama, Feb 25, 2016.

  1. Trama

    Trama Member

    Joined:
    Dec 12, 2015
    Messages:
    152
    Likes Received:
    21
    So all of a sudden my parts are crumbling once the come off the bed. Seems like there is 0 layer adhesion but I haven't changed anything but the nozzel to one of matter hackers coated stainless steel nozzels.

    Any thought?


    Sent from my iPhone using Tapatalk
     
    #1 Trama, Feb 25, 2016
  2. Mike Kelly

    Mike Kelly Volunteer

    Joined:
    Mar 11, 2013
    Messages:
    6,967
    Likes Received:
    2,276
    If you put back on the brass nozzle does it go back to normal? Sounds like under extrusion
     
    #2 Mike Kelly, Feb 25, 2016
  3. Trama

    Trama Member

    Joined:
    Dec 12, 2015
    Messages:
    152
    Likes Received:
    21
    I'm in the process of doing that.


    Sent from my iPhone using Tapatalk
     
    #3 Trama, Feb 25, 2016
  4. Trama

    Trama Member

    Joined:
    Dec 12, 2015
    Messages:
    152
    Likes Received:
    21
    So your correct with it under extruding. But what would cause that to happen all of a sudden. I have had that tweeted in for months


    Sent from my iPhone using Tapatalk
     
    #4 Trama, Feb 25, 2016
  5. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
    Staff Member

    Joined:
    Feb 21, 2013
    Messages:
    23,912
    Likes Received:
    7,338
    What material? PLA is prone to transient micro-slogs (which is why seasoning or an oiler is suggested).
    Other materials I have not seen this behavior with.
     
    #5 mark tomlinson, Feb 25, 2016
  6. Mike Kelly

    Mike Kelly Volunteer

    Joined:
    Mar 11, 2013
    Messages:
    6,967
    Likes Received:
    2,276
    *shrugs* 3D printing is just one of those things that it can work great for months and then stop for some arbitrary reason. Past success is no indicator of anything really.

    Probably just a partial jam in the nozzle.
     
    #6 Mike Kelly, Feb 25, 2016
    KTMDirtFace likes this.
  7. Trama

    Trama Member

    Joined:
    Dec 12, 2015
    Messages:
    152
    Likes Received:
    21
    So it seems that when I cleaned out the Hobbed bolt area there was less tension on the screws and less material was being pushed through. Little adjustment to the two screws and all is well.

    And I am using pla.

    Thanks everyone. I never would have thought to have checked for under extrusion


    Sent from my iPhone using Tapatalk
     
    #7 Trama, Feb 25, 2016
  8. Trama

    Trama Member

    Joined:
    Dec 12, 2015
    Messages:
    152
    Likes Received:
    21
    Looks like I spoke to soon. It's constantly under extruding. I even re calibrated the e steps and it under extrudes after one or two runs. Could I have worn out the Hobbed bolt using carbon fiber and it's just not grabbing anymore


    Sent from my iPhone using Tapatalk
     
    #8 Trama, Feb 25, 2016
  9. KTMDirtFace

    KTMDirtFace Well-Known Member

    Joined:
    May 18, 2015
    Messages:
    1,247
    Likes Received:
    461
    I don't know about wearing out the bolt.

    Did you try a new nozzle? or a PLA oiler?

    Usually when I suddenly have random extrusion problems I give up and put a new nozzle on :)
     
    #9 KTMDirtFace, Feb 25, 2016
  10. Trama

    Trama Member

    Joined:
    Dec 12, 2015
    Messages:
    152
    Likes Received:
    21
    I have switched between 3 nozzels and the same issue still persists and I have used an oiler. I will re address it again on Monday, hopefully walking away from it for the weekend will allow me to spot something I may be missing


    Sent from my iPhone using Tapatalk
     
    #10 Trama, Feb 25, 2016
  11. Trama

    Trama Member

    Joined:
    Dec 12, 2015
    Messages:
    152
    Likes Received:
    21
    Looks like I ground my Hobbed bolt to hell and that's why my prints won't bond. No consistent extrusion


    Sent from my iPhone using Tapatalk
     
    #11 Trama, Mar 1, 2016
  12. Trama

    Trama Member

    Joined:
    Dec 12, 2015
    Messages:
    152
    Likes Received:
    21
    [​IMG]


    Sent from my iPhone using Tapatalk
     
    #12 Trama, Mar 1, 2016
  13. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
    Staff Member

    Joined:
    Feb 21, 2013
    Messages:
    23,912
    Likes Received:
    7,338
    http://www.ebay.com/itm/Robo-3D-Hob...ter-Upgrade-Ships-fast-from-USA-/321957892671

    There are others around the world or order it from Robo3D (I imagine they have them).

    I had three different ones I bought off of eBay a long time back, they all worked fine some just required adding washers to make them line up correctly. This one should be precut at the correct spot. Ping the seller to be certain whichever one you get.
     
    #13 mark tomlinson, Mar 1, 2016
    Trama likes this.
  14. Trama

    Trama Member

    Joined:
    Dec 12, 2015
    Messages:
    152
    Likes Received:
    21
    Still under warranty from Robo so a new one is on the way. It's been driving me nuts the past couple days.


    Sent from my iPhone using Tapatalk
     
    #14 Trama, Mar 1, 2016

Share This Page