Jump to content
UltiMaker Community of 3D Printing Experts

Extrusion issue with 1.75mm filament


Recommended Posts

Posted · Extrusion issue with 1.75mm filament

I had modified my Ultimaker 2+ printer to be able to print with 1.75mm filament. I used the kit from Dynamism (https://www.dynamism.com/mosaic-palette-ultimakerconversionkit.html)  to replace the extruder arm, Bowden tube and add a short hot-end PTFE sleeve in the print head. After couple of tweaks I was able to move the 1.75mm filament freely through the feeder to reach the nozzle.

 

The problem that I have now is that after reaching the nozzle the filament does not flow through the nozzle as can be seen in the video included. During the run, the filament does get slightly grounded at the feed point which I think should not be a big problem. The issue is that though the tip of the filament is inside the very hot nozzle (220 C) it still retained its original structure without melting. The nozzle is a new one hence there is no blockage in it. I wanted to see if anyone has a suggestion as to how to resolve this issue?

 

Thanks  

 

 

 

Grinded part of filament.jpg

Start part of the filament.jpg

  • Link to post
    Share on other sites

    Posted · Extrusion issue with 1.75mm filament

    It seems that there is an insert in the kit.

     

    https://support.mosaicmfg.com/Wiki/Installing_the_short_hot-end_PTFE_sleeve_into_the_hot-end


    I can imagine that the filament gets stuck in front of it or in it.

     

    Have you tried feeding the filament manually?

     

    Also

    1. Maintenance - > Head up nozzle an push the filament manual

     

    or (next)

     

    2. Maintenance -> move material

     

    Many greetings

  • Link to post
    Share on other sites

    Posted · Extrusion issue with 1.75mm filament

    Thank you for the response.

    I did try to heat up the nozzle move the filament using the 'Move material' option under Maintenance. The machine did clicking noise as the dial was rotated but it did not move the material through the nozzle.

     

    Next I went ahead replaced the 2.85mm coupler with the insert with a new 1.75mm coupler that was free of the insert so the filament can flow freely. Even that did not help with the issue. 

     

    Best

  • Link to post
    Share on other sites

    Posted · Extrusion issue with 1.75mm filament

    Pity

     

    The conversion is apparently not something that works at the push of a button. I would not rule out minor tinkering.

     

    5 hours ago, UlrichC-DE said:

    1. Maintenance - > Head up nozzle an push the filament manual

    That worked?

    If you can get it through the tube manually, without a motor, it may also work with a motor.

    This way you can also find out if it is stuck somewhere.

     

    The clicking sound is normal. If you are not sure whether material is flowing, you can reach under the feeder and feel the material flow with your finger.


    I would also test if you can stop the filament in the bowden with your thumb.

    Maybe the feeder does not have enough power.

     

    Maybe something helps to find the problem.


    Many greetings

  • 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
     Share

    • Our picks

      • Here it is. The new UltiMaker S7
        The UltiMaker S7 is built on the success of the UltiMaker S5 and its design decisions were heavily based on feedback from customers.
         
         
        So what’s new?
        The obvious change is the S7’s height. It now includes an integrated Air Manager. This filters the exhaust air of every print and also improves build temperature stability. To further enclose the build chamber the S7 only has one magnetically latched door.
         
        The build stack has also been completely redesigned. A PEI-coated flexible steel build plate makes a big difference to productivity. Not only do you not need tools to pop a printed part off. But we also don’t recommend using or adhesion structures for UltiMaker materials (except PC, because...it’s PC). Along with that, 4 pins and 25 magnets make it easy to replace the flex plate perfectly – even with one hand.
         
        The re-engineered print head has an inductive sensor which reduces noise when probing the build plate. This effectively makes it much harder to not achieve a perfect first layer, improving overall print success. We also reversed the front fan direction (fewer plastic hairs, less maintenance), made the print core door magnets stronger, and add a sensor that helps avoid flooding.
         

         
        The UltiMaker S7 also includes quality of life improvements:
        Reliable bed tilt compensation (no more thumbscrews) 2.4 and 5 GHz Wi-Fi A 1080p camera (mounted higher for a better view) Compatibility with 280+ Marketplace materials Compatibility with S5 project files (no reslicing needed) And a whole lot more  
        Curious to see the S7 in action?
        We’re hosting a free tech demo on February 7.
        It will be live and you can ask any questions to our CTO, Miguel Calvo.
        Register here for the Webinar
          • Like
        • 12 replies
      • UltiMaker Cura 5.3.0-Alpha 🎄 Tree Support Spotlight 🎄
        Are you a fan of tree support, but dislike the removal process and the amount of filament it uses? Then we would like to invite you to try this special release of UltiMaker Cura. Brought to you by our special community contributor @thomasrahm
         
        We generated a special version of Cura 5.2 called 5.3.0 Alpha + Xmas. The only changes we introduced compared to UltiMaker Cura 5.2.1 are those which are needed for the new supports. So keep in mind, this is not a sneak peek for Cura 5.3 (there are some really cool new features coming up) but a spotlight release highlighting this new version of tree supports.  
          • Like
        • 17 replies
      • New here? Get ahead with a free onboarding course
        Hi,
         
        Often getting started is the most difficult part of any process. A good start sets you up for success and saves you time and energy that could be spent elsewhere. That is why we have a onboarding course ready for
        Ultimaker S5 Pro Bundle, Ultimaker S5, Ultimaker S3 Ultimaker 2+ Connect.   
        They're ready for you on the Ultimaker Academy platform. All you need to do to gain access is to register your product to gain free access. 
        Ready? Register your product here in just 60 seconds.
          • Like
        • 14 replies
    ×
    ×
    • Create New...