Jump to content
Ultimaker Community of 3D Printing Experts

UM1 Extrusion Problem


kas
 Share

Recommended Posts

Posted · UM1 Extrusion Problem

I have been using my UM1 for nearly a year, and it has been working pretty well. Recently, I am seeing a lot of extrusion problems, and I'd appreciate any advice.

Small prints work fine. Larger prints work fine for about 20-30 minutes, and then the rate of material flow slows down significantly, the bowden tube pops out of the top of the extrusion head, and the filament flow stops. I fix the bowden tube, and the next print works fine for the first 20-30 minutes, then the problem presents itself again.

I have completely replaced the hot end, the bowden tube, and the material feed mechanism, but the problem still persists.

Any ideas or suggestions?

 

  • Link to post
    Share on other sites

    Posted · UM1 Extrusion Problem

    Yes, it happens with at least 3 different filaments I have tried. I changed the tube clamp on top of the hot end too, which seems to help keep the bowden tube in place, but the prints are still very thin and porous, and they crumble easily. Any suggestion?

     

  • Link to post
    Share on other sites

    Posted · UM1 Extrusion Problem

    You said that you replaced the hotend does that include the nozzle?

    If not it might be partially clogged maybe?

    Have you tried increasing the printing temperature a bit to see if you still have the same effect?

     

  • Link to post
    Share on other sites

    Posted · UM1 Extrusion Problem

    I have tried two different nozzles (both new), and the problem persisted with both. The flow is better when I raise the temperature to 240-250, but the print quality is not good at that high a temperatures (I use PLA).

     

  • Link to post
    Share on other sites

    Posted · UM1 Extrusion Problem

    when the nozzle is hot, can you push the filament through by hand by turning the feeder wheel? Does the filament come out as a regular strand?

    Check also in the feeder mechanism, when it is opened, if the little black wheel can turn freely.

    Check if there is any filament dust on the knurled bolt in the feeder mechanism….. what else to check?...

     

  • Link to post
    Share on other sites

    Posted · UM1 Extrusion Problem

    How about the latch that closes up the extruder? Is there any slack in there?

     

  • Link to post
    Share on other sites

    Posted · UM1 Extrusion Problem

    Thank you all for your suggestions. It turned out the problem was the extruder motor.

     

  • 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

      • Ultimaker showcase | April 2022 | 4pm CEST | 10am EDT
        I'm excited because I've personally produced this showcase event, so if you are curious what else I'm up to nowadays, come check it out and say hi in the chat! It would mean a lot! 
          • Thanks
          • Like
        • 4 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
        • 11 replies
    ×
    ×
    • Create New...