Jump to content

filament clogging UMO+ /w imgs


Recommended Posts

Posted (edited) · filament clogging UMO+ /w imgs

The printer is 2 months old. I printed in many layer-heights, temps and speeds with good results.

Suddenly the Printer stopped pushing filament through the nozzle.

I opened it up, found this situation, cleaned it, closed it, used it and it happened again immediately.

 

printhead disassembled and ordered

5a3320a186f48_WhatsAppImage2016-08-23at22_55.26(3).thumb.jpeg.68ddcec33273b96421ac7f444e3706a2.jpeg

It seems, the filament melted before it got into the peek isolator and clogged the hot end isolator.

 

hot end isolator coupler top view:

5a3320a19a30e_WhatsAppImage2016-08-23at22_55.26(1).thumb.jpeg.982eaaedfd6d95d81cfba8a983d6bd86.jpeg

5a3320a14a959_WhatsAppImage2016-08-23at22_55_26.thumb.jpeg.e334670048936c768c0a34031af6bdd8.jpeg

What, why, and how to fix?

5a3320a186f48_WhatsAppImage2016-08-23at22_55.26(3).thumb.jpeg.68ddcec33273b96421ac7f444e3706a2.jpeg

5a3320a19a30e_WhatsAppImage2016-08-23at22_55.26(1).thumb.jpeg.982eaaedfd6d95d81cfba8a983d6bd86.jpeg

5a3320a14a959_WhatsAppImage2016-08-23at22_55_26.thumb.jpeg.e334670048936c768c0a34031af6bdd8.jpeg

Edited by Guest
  • Link to post
    Share on other sites

    Posted · filament clogging UMO+ /w imgs

    By the look of the barrel near the aluminium block, you already had a leak there. Did you solve it by tightening the nozzle? Or did you rotated the peek with the barrel to close the leak?

    The think it's that to clean that you might need to assemble all, set at 90C and pull that filament (if it's pla 80-90 and 110-120 or so for abs).

    My theory it's:

    You did tight the barrel (hense the marks on it) to close a leak. That could make that the barrel did screw futher in the top peek, pushing the coupler and deforming it overtime. By the look of all I think you just need a new ptfe coupler. The best way to test a coupler it's to pass some filament on it (with the coupler outside ofc) and 'spin' the coupler to see if woobles. If woobles it's damaged, if the filament has a hard time to go in also it's damaged and if it's brown it's also damaged.

    Ofc it could just be a clog of dust and dirt that deposits overtime inside the nozzle. To clean that you need a few good atomics, like 8-15 until all its as clean as a dish on sunday.

  • Link to post
    Share on other sites

    Posted (edited) · filament clogging UMO+ /w imgs

    neotko is an extreme expert at UMO - more so than me.  So read his advice carefully.  Some other ideas though more specific to your question - if you do retractions that are too long the heat moves upwards with each retraction.  And future retractions then pull the heat higher up each time.  If it gets above the white teflon part it's a problem.  Also make sure your bowden is all the way in so there isn't much room for filament to expand above the teflon.

    What is your retraction distance?  I use 4.5mm on UMO but my bowden is nice and tight (no play).  If you do get a new teflon, get it from 3dsolex as theirs is a newer material that is more durable.

    Consider maybe putting a small fan blowing on the upper block area to keep the teflon cool. UM did exactly that in the UM2 (the rear fan).

    Edited by Guest
  • Link to post
    Share on other sites

    Posted · filament clogging UMO+ /w imgs

    Yeah I did that too until moved to um2 hotends

    I uploaded some time ago ptfe fans holder for umo+ https://www.youmagine.com/designs/ptfe-cooler-umo-for-30x30-25x25

    Also the TFT of 3dsolex, if your coupler it's dead, should be really nice to have. I never tested it but if it's half as good as the ones for um2 then it's a winwin. A normal ptfe coupler last around 100-200h on a umo, and tft/tfm couplers can last 500-2000h so it's a time saver.

    • Like 1
    Link to post
    Share on other sites

    Posted · filament clogging UMO+ /w imgs

    Thanks for the help. I think its working now.

    I cleaned the nozzle and all the parts very very much, tested the coupler (everything fine) and so far i dont have problems. i think the issue was some alien parts in the nozzle that stopped the filament from pushing through.

    Finn

  • Link to post
    Share on other sites

    Posted · filament clogging UMO+ /w imgs

    If the printer is in a very dusty environment it's best to make a filter to clean the filament as it enters the printer. There are quite a few out there - search for them on youmagine or thingiverse.

  • Link to post
    Share on other sites

    Posted · filament clogging UMO+ /w imgs

    Yeah I did that too until moved to um2 hotends

    I uploaded some time ago ptfe fans holder for umo+ https://www.youmagine.com/designs/ptfe-cooler-umo-for-30x30-25x25

     

    Would that work on a UMO board?

  • Link to post
    Share on other sites

    Posted · filament clogging UMO+ /w imgs

    If you have somewhere to plug power of the fan yeah

  • Link to post
    Share on other sites

    Posted · filament clogging UMO+ /w imgs

    I wasn't sure if the mainboard did

    Or use the external power idea you linked in the youmagine post

  • Link to post
    Share on other sites

    Posted · filament clogging UMO+ /w imgs

    I think there's room on the umo board for some extra 5v fan? I really not familiar with it sorry @lepaul but yeah it should work with the dualfancap perfectly (that's how I used it). The key it's to install it on the oposite side of the hotend so you don't get cooling hitting the alublock but just the upper peek/coupler area

  • Link to post
    Share on other sites

    Posted · filament clogging UMO+ /w imgs

    Right, so on the backside, like the picture from youmagine. Not sure I'll do that upgrade right away but good to know...nice way to add life to the peek/coupler

    • Like 1
    Link to post
    Share on other sites

    Create an account or sign in to comment

    You need to be a member in order to leave a comment

    Create an account

    Sign up for a new account in our community. It's easy!

    Register a new account

    Sign in

    Already have an account? Sign in here.

    Sign In Now
    • Our picks

      • S-Line Firmware 8.3.0 was released Nov. 20th on the "Latest" firmware branch.
        (Sorry, was out of office when this released)

        This update is for...
        All UltiMaker S series  
        New features
         
        Temperature status. During print preparation, the temperatures of the print cores and build plate will be shown on the display. This gives a better indication of the progress and remaining wait time. Save log files in paused state. It is now possible to save the printer's log files to USB if the currently active print job is paused. Previously, the Dump logs to USB option was only enabled if the printer was in idle state. Confirm print removal via Digital Factory. If the printer is connected to the Digital Factory, it is now possible to confirm the removal of a previous print job via the Digital Factory interface. This is useful in situations where the build plate is clear, but the operator forgot to select Confirm removal on the printer’s display. Visit this page for more information about this feature.
          • Like
        • 0 replies
      • Ultimaker Cura 5.6 stable released
        Cura now supports Method series printers!
         
        A year after the merger of Ultimaker and MakerBotQQ, we have unlocked the ability for users of our Method series printers to slice files using UltiMaker Cura. As of this release, users can find profiles for our Method and Method XL printers, as well as material profiles for ABS-R, ABS-CF, and RapidRinse. Meaning it’s now possible to use either Cura or the existing cloud-slicing software CloudPrint when printing with these printers or materials
        • 48 replies
    ×
    ×
    • Create New...