Titan not extruding correctly

Discussion in 'Titan' started by TstarkEngineering, Apr 29, 2016.

  1. danzca6

    danzca6 Well-Known Member

    Joined:
    Apr 26, 2016
    Messages:
    83
    Likes Received:
    6
    Also, where did you buy it from? Just checking to see if it was e3d or an authorized dealer. I see some fakes already in the market unfortunately.
     
  2. Mihai

    Mihai Member

    Joined:
    Aug 22, 2016
    Messages:
    6
    Likes Received:
    0
    Confirm titans bought from an authorised retailer:

    1off directly from e3d - 26/04/2016
    2off from Ooznest.co.uk - 5/08/16

    Sent an email to e3d support, fingers crossed they might have an idea

    Cheers,

    Mihai.
     
  3. Mihai

    Mihai Member

    Joined:
    Aug 22, 2016
    Messages:
    6
    Likes Received:
    0
    Forgot to include the video on the titan working as it should when set at an extrusion speed of 5mm/s

    https://goo.gl/photos/ADWsYk6TwB4Rwdwv5

    What I can't figure out is why the idler seems to start jumping about when feedrate is increased.
     
  4. Tony Glancy

    Tony Glancy Member

    Joined:
    Aug 15, 2016
    Messages:
    4
    Likes Received:
    0
    Hi Guys, My extruder also chews the filament. I suspect it is an issue with the commands in the Gcode as the sample model which was supplied with the printer (the little boat) prints absolutely fine with no extruder issues. When I export one of my CAD models via STL into Cura and export Gcode I get very mixed results. The main issue is that the extruder wheel revolves continuously at high speed. The wheels revolves very slowly in discrete steps when print ing the samble model Boat. Are there commands in the Gcode from Cura which could be overwriting/ confusing the Printer default settings?
     
  5. Tony Glancy

    Tony Glancy Member

    Joined:
    Aug 15, 2016
    Messages:
    4
    Likes Received:
    0
    I openened to the two Gcode files side-by-side in notepad and the E values in my file do appear to be orders of magnitude higher than in the sample file. I need to determine which settings in the option on Cura set these values.
     
  6. Mihai

    Mihai Member

    Joined:
    Aug 22, 2016
    Messages:
    6
    Likes Received:
    0
    Hi Tony,

    Could you try doing a constant extrusion at various speeds just to see if you've got the same issue as me ?

    Not sure what firmware you're running on your printer but if you don't have the facility to do this via a lcd you can try the following gcode:

    G91 ; relative positioning

    G1 E100 F300 ; extrude 100mm of filament at 5mm/s

    G1 E100 F600 ; extrude 100mm of filament at 10mm/s

    G1 E100 F1200; extrude 100mm at 20mm/s - this is a bit brutal for any extruder.

    I'm seeing filament grinding / slipping starting from 10mm/s upwards
     
  7. Tony Glancy

    Tony Glancy Member

    Joined:
    Aug 15, 2016
    Messages:
    4
    Likes Received:
    0
    Hi Mihai, I have just installed Slic3r and am having better results. I have a build running currently, so far, so good.
    I will try your experiment when the build is done. The first few layers were rough. -It seems like it could be a combination of the extrude multiplier set too high and the Z offset requiring further fine tuning. The first few layers seem to be overly compressed and the filament may not be able to flow out as quickly as the extruder is driving it in causing slippage and shredding of the filament. This is my first week of 3D printing so its all experiment at this point.
     
  8. Mihai

    Mihai Member

    Joined:
    Aug 22, 2016
    Messages:
    6
    Likes Received:
    0
    Well, a bit disappointed with e3d... now a week and I still haven't had a reply on the titan issue... I can understand they must be busy sorting out all the bigbox orders but still... at least a courtesy email, something...

    Will be staying away from the titan extruders for now
     
  9. Sanjay

    Sanjay Administrator
    Staff Member

    Joined:
    Feb 27, 2014
    Messages:
    125
    Likes Received:
    118
    @Mihai I've talked to the guys in support to see what's happened to your support request. They've had a hard time recently as Dan was away for a while, and poor Lawson was manning all communications for some time. It was also a bank holiday (a sort of national holiday here in the UK) which elongated the weekend. Dan is back and they're smashing through emails.

    From your video, and the info in your support request I can't really see that there is anything wrong with your extruder. No matter how good your extruder is an E3D-v6 simply cannot melt plastic at the rate you're smashing filament into it. Even with a Volcano system your extruder is never pushing filament into the hotend at 10mm/s during printing. The melt rate of the system simply can't keep up with that amount of material, and it doesn't need to, as no printing situation results in extrusions of that rate.

    The from running similar tests to your posted GCode the maximum consistent rate of extrusion is around 5mm/s, with 7mm/s being possible at a push. 10mm/s will result in grinding. This is not an extruder issue, this is simply the maximum melt rate of the hotend coming into play. If you want higher flow rates use a Volcano.

    The takeaway here is that it looks like everything is fine, and your test isn't indicative of a problem, the rates at which the extruder moves during printing is around 10x slower that what your test is trying to run, which will of course cause issues.

    If you're having problems with extrusion in actual printing situations please do let us know, and describe the problems with the print. The videos and photos are most helpful indeed! However the videos of the test don't show the issues you're experiencing with actual printing so I can't really diagnose your issues from them.

    Cheers,
    Sanjay
     
  10. Alex9779

    Alex9779 Moderator
    Staff Member

    Joined:
    Sep 4, 2015
    Messages:
    2,411
    Likes Received:
    735
    Thanks @Sanjay I was about to answer but I had no idea how to tell...
    As reference @Mihai you can dig through https://forum.e3d-online.com/index.php?threads/calibrating-e-steps.1132/ there are my findings when I tried to calibrate E steps.
    The result of all this I described in the thread was just what Sanjay said, the speed you are trying to extrude is too fast, in a printing situation you will never reach that speed if you stay in reasonable limits...
     
  11. Kevin Steed

    Kevin Steed Member

    Joined:
    Sep 4, 2016
    Messages:
    2
    Likes Received:
    0
    Glad I found this post. Was pulling my hair out with grinding issues on ABS and PETG.
    Had mine since mid April, and yup it's got the half cut hobbed shaft. Submitted my email with order number, hopefully can be resolved quickly.
     
  12. lance

    lance Well-Known Member

    Joined:
    Nov 25, 2015
    Messages:
    54
    Likes Received:
    9
    do you have a piece of teflon tube inserted into the hotend and then inserted into the bottom of the titan?
     
  13. Kevin Steed

    Kevin Steed Member

    Joined:
    Sep 4, 2016
    Messages:
    2
    Likes Received:
    0
    @lance if that was to me, yes.
    And now it's grinding all the time. But the new one is winging it's way tomorrow, thanks to E3d.
     
  14. danzca6

    danzca6 Well-Known Member

    Joined:
    Apr 26, 2016
    Messages:
    83
    Likes Received:
    6
    Thanks for the reminder. I didn't submit a replacement back when @Sanjay posted that way back and figured I missed the boat. Just submitted my replacement and hopefully will get a new hobb gear. I got one of the first batch back in early April.
     
  15. danzca6

    danzca6 Well-Known Member

    Joined:
    Apr 26, 2016
    Messages:
    83
    Likes Received:
    6
    E3D is awesome. Took care of my hobb gear issue quick and easily. Got it today and man what a difference.
     
  16. cozmicray

    cozmicray Member

    Joined:
    Mar 1, 2014
    Messages:
    8
    Likes Received:
    0
    I also have a e3D Titan filament grinder
    What is the fix?

    IMG_2720.jpg IMG_2723.jpg IMG_2726.jpg
     
  17. Alex9779

    Alex9779 Moderator
    Staff Member

    Joined:
    Sep 4, 2015
    Messages:
    2,411
    Likes Received:
    735
    Contact support for a replacement. Your hobbed gear is not as it should be...
     
    danzca6 likes this.
  18. danzca6

    danzca6 Well-Known Member

    Joined:
    Apr 26, 2016
    Messages:
    83
    Likes Received:
    6
    Just a reminder from earlier in this thread, your hobb gear cut should look like the one on the left.

    hobb_before_after.jpg
     
  19. danielogc

    danielogc Member

    Joined:
    Aug 27, 2015
    Messages:
    9
    Likes Received:
    0
    I guess I should be visiting the forum more often. I've got two of the faulty hob gears and struggling with the first one for most of 2016. I had to oil the hobbed gear with sewing machine oil everytime it grinds. When I assembled my second printer in December the second Titan turned out to be a grinder and totally could not feed the filament through. I am glad there is a replacement. I better request for a replacement immediate.y, I just hope there is no expiry for the exchange given that we are into a new year now. Happy New Year everybody!
     
  20. Rodolfo

    Rodolfo Member

    Joined:
    Jun 30, 2016
    Messages:
    2
    Likes Received:
    1
    Good morning, everyone. After carefully looking at the full discussion here, I've noticed something different.
    My filament is always getting misfeed to the extruder, because it is always being place on either sides of the hobb gear... I have to be always releasing the idler arm so that the filament gets to the middle of the hob gear. I've tried to increase and decrease pressure, keep the hob gear always clean, everything that I have remembered and seen here in the forum.

    It seems that due to the fact that I use abrasive filaments such as copper and carbon fibber, it looks like that the idler arm hole, through which the filament is inserted is some of what "eaten"...

    If not so, then I do not know what can it be...

    Can anyone provide a helping hand?

    Thank you very much!!!
     

Share This Page