Clicking .. and stops fully extruding

Discussion in 'Titan' started by Sink, Jun 15, 2017.

  1. Sink

    Sink Member

    Joined:
    Jun 15, 2017
    Messages:
    10
    Likes Received:
    0
    About 1 week into the Titan with new E3D hot end. Had quite a few good prints, a few so .. so.
    Running PLA/PHA.

    Had a stringy print and adjusted the retraction a bit on Simplify3D and after one clean print.. it all changed ...

    Titan is now clicking and stops fully extruding 1 minute or so into a print. Have taken it apart numerous times, see nothing wrong. Tried increasing current on motor, no difference. Turned off retraction and same thing.. OK for a minute, then clicking starts and extruding becomes sporadic and job has to be stopped.

    AM frustrated and a hammer is beginning to look like an answer..

    Any ideas would be welcome ..
     
  2. A Dragon In A Pie Costume

    A Dragon In A Pie Costume Well-Known Member

    Joined:
    Jul 6, 2016
    Messages:
    203
    Likes Received:
    15
    Your issue is simple, you retract too much, your filament is getting caught somewhere within the nozzle/heartbreak assembly, reduce your retraction and lower your temp by 5° to avoid stringing
     
  3. Sink

    Sink Member

    Joined:
    Jun 15, 2017
    Messages:
    10
    Likes Received:
    0
    Will give it a try .. Thks ..
     
  4. Sink

    Sink Member

    Joined:
    Jun 15, 2017
    Messages:
    10
    Likes Received:
    0
    3 hours into my print and all is well .. Clean, no clicks, but I am a little confused as to why .. lower temp, ok, understand, but I turned off retraction so not sure why turning it back on, albeit at a lower speed, is working, Simplify 3d never actually turned it off? .. we are not in Kansas anymore..
     
  5. A Dragon In A Pie Costume

    A Dragon In A Pie Costume Well-Known Member

    Joined:
    Jul 6, 2016
    Messages:
    203
    Likes Received:
    15
    When you retract too much, the filament will latch onto re the ptfe tube meets the heatsink, and by pushing it too fast it simply jams, retracting less and slowing down eliminates this issue

    For the reason it didn't work, perhaps you didn't insert it back and it kept getting stuck
     
  6. Sink

    Sink Member

    Joined:
    Jun 15, 2017
    Messages:
    10
    Likes Received:
    0
    Well, same problem is back.. This time it failed half-way through a print. Not only clicking, but also not extruding fully.. When I stopped print and re hooked up to pronterface, heated, and tried to extrude, it started clicking and not fully extruding again.. Cooling fins are hot as well, so all jammed up in side.. Close to Chucking this thing and going back to a Gregs.. Really frustrated ..
     
  7. A Dragon In A Pie Costume

    A Dragon In A Pie Costume Well-Known Member

    Joined:
    Jul 6, 2016
    Messages:
    203
    Likes Received:
    15
    That is incredibly odd... Have you tried giving more power to the motor?
     
  8. elmoret

    elmoret Administrator

    Joined:
    Mar 1, 2014
    Messages:
    586
    Likes Received:
    91
    If the cooling fins are hot the problem isn't the Titan, its the hotend's cooling fan/duct.
     
  9. elmoret

    elmoret Administrator

    Joined:
    Mar 1, 2014
    Messages:
    586
    Likes Received:
    91
    Yes, he mentioned doing so in the first post.
     
  10. Sink

    Sink Member

    Joined:
    Jun 15, 2017
    Messages:
    10
    Likes Received:
    0
    This mornings print timeline..

    Align bed ..check ( a little more distance than normal, 2 sheets of paper, this thing is REALLY touchy about that)..
    heat and extrude 5 mm from Pronterface (2-3 extrudes .. all good) ..
    Switch to Simplify3D .. start print .. 1 minute in ... click .. miss print .. click .. Stop print ..
    Disconnect..
    go back to Pronterface .. heat .. test extrude .. click .. partial extrude .. click ..

    Disconnect .. Release filament .. Reset filament fully ..

    Pronterface .. heat .. test extrude .. 3 times 5mm all ok ..

    Simplify3D .. start print .. first ;ayer almost complete .. looking hopeful ..

    Settings:
    Retract is so low it is barely on, print speed is way down ..

    It appears to have something to do with the some problem inside the throat causing filament to get hung and fins getting hot

    After this print will replace the PTFE tube.
    Have noticed that I can almost never get a second print after a successful one without going through more motions than Nadal.

    This thing is currently as temperamental as Trump reading a newspaper ..
     
  11. Sink

    Sink Member

    Joined:
    Jun 15, 2017
    Messages:
    10
    Likes Received:
    0
    Failed again .. half-way through .. Fan blades are hot to the touch .. Clicking and partial extrude .. Beyond frustrated ..
    If this is a problem with the cooling fan/duct .. What could be the problem? .. PTFE tube bad fit .. Insufficient cooling ?
    Power supply not strong enough ? Printing running too slow?

    This thing must be jamming in the throat but why?
     
  12. Sink

    Sink Member

    Joined:
    Jun 15, 2017
    Messages:
    10
    Likes Received:
    0

    Ok, assuming this is now a cooling problem on the hotend, I checked the fan and it does seem to be blowing the air away from the fins instead of across them. So I reversed the fan and the airflow across the fans is now much stronger. If teh initial failures were due to distance to be and the secondary failure to partial jams, possibly the problem .. One more try ..

    “Once more unto the breach, dear friends, once more;/ Or close the wall up with our English dead.”
     
  13. Sink

    Sink Member

    Joined:
    Jun 15, 2017
    Messages:
    10
    Likes Received:
    0
    Successful 5 hour print.. followed by a needed cold pull and then a 30 minute print success
    Fan reversal seems to have helped with overheating problem.. but between prints the filament got hung, hence the needed cold pull ..
    This time leaving the fan on for an additional 5 minutes to keep the fan blades cool during cool down and see if that makes a difference in cold pull necessity between prints..
    Might be hope for co-existing yet ..
     

Share This Page