Jump to content
Ultimaker Community of 3D Printing Experts

Extruder Pressure on UMO


Recommended Posts

Posted (edited) · Extruder Pressure on UMO


I am having trouble with my extruder tension I don't know if its to tight or too loose, but I suspect it is too loose because it's not pushing out the extruder and backing up at the extruder gear (see pic).

Anyone have a link for how to tension it correctly? i.e. a better one than the Assembly guide stating a specific length on the adjustment screw.

Edited by Guest
  • Link to post
    Share on other sites

    Posted · Extruder Pressure on UMO

    it is best to look at the pattern that the knurled bolt is making in your filament: the marks should be not to light, not to deep to transform the filament completely. If the filament is not moving towards the nozzle the problem might be more towards the printhead (ptfe, bowden, nozzle issues). Of coarse the connection of the bowden into your extruder must be tight, inspect if the clips with the metal teeth are OK.

  • Link to post
    Share on other sites

    Posted · Extruder Pressure on UMO

    The feeder should be able to lift about 5kg of weight so that's one way to test it. In general tighter is better as long as you don't turn the circular filament into an ellipse that gets stuck somewhere (head or bowden).

    Filament on the left needs more pressure. Filament on the right is possibly a little too much.


  • 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

      • 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
        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
        • 12 replies
    • Create New...