Jump to content

Recommended Posts

Posted (edited) · Ultimaker 2 Extended - Feeder keeps skipping

Feeder keeps skipping

Model: Ultimater 2 Extended

Hey guys,

I'm a little bit confused. After hours of printing suddenly the feeder of my Ultimaker 2 Extended started skipping: Video: https://drive.google.com/file/d/0B7KyR2ULRkeQa3U3VW1INGg1bms/view?usp=sharing

What I already tried:

 

  • --> doesn't skip, when the hose is not inserted
  • changed nozzles
  • changed the hardness of the feeder

 

Have you got any ideas to help me? Because actually this skipping causes the feeder to not transport the filament fluently, so that the prints come out bad.

Thank you

Werner Koch

Edited by Guest
  • Link to post
    Share on other sites

    Posted (edited) · Ultimaker 2 Extended - Feeder keeps skipping

    This is very common.  The stepper motor can only push so hard - about 5kg of force.  There can be many causes but seeing the incredible speed of that motor I'm guessing you are just printing too fast.  The hotter the filament is, the less viscous it is.  So at 190C the filament is more like toothpaste and at 240C PLA is more like honey.

    Did you change to a smaller nozzle size recently?  Did you change filaments recently (some PLA needs higher temperature)?  Is it possible you are now printing ABS and before PLA?

    Check all the printing speeds in cura - especially the infill speed (which should be zero):

    Here are my recommended top speeds for .2mm layers (twice as fast for .1mm layers) and .4mm nozzle:

    20mm/sec at 200C

    30mm/sec at 210C

    40mm/sec at 225C

    50mm/sec at 240C

    The printer can do double these speeds but with huge difficulty and usually with a loss in part quality due to underextrusion. Different colors print best at quite different temperatures and due to imperfect temp sensors, some printers print 10C cool so use these values as an initial starting guideline and if you are still underextruding try raising the temp. But don't go over 240C with PLA.

    What is your: print speed, nozzle size, layer height, printing temperature? Material? I want to see if you are within expected printing speed range.

    Edited by Guest
    • 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

      • Help Us Improve Cura – Join the Ultimaker Research Program
        🚀 Help Shape the Future of Cura and Digital Factory – Join Our Power User Research Program!
        We’re looking for active users of Cura and Digital Factory — across professional and educational use cases — to help us improve the next generation of our tools.
        Our Power User Research Program kicks off with a quick 15-minute interview to learn about your setup and workflows. If selected, you’ll be invited into a small group of users who get early access to features and help us shape the future of 3D printing software.

        🧪 What to Expect:
        A short 15-minute kickoff interview to help us get to know you If selected, bi-monthly research sessions (15–30 minutes) where we’ll test features, review workflows, or gather feedback Occasional invites to try out early prototypes or vote on upcoming improvements
        🎁 What You’ll Get:
         
        Selected participants receive a free 1-year Studio or Classroom license Early access to new features and tools A direct voice in what we build next
        👉 Interested? Please fill out this quick form
        Your feedback helps us make Cura Cloud more powerful, more intuitive, and more aligned with how you actually print and manage your workflow.
        Thanks for being part of the community,

        — The Ultimaker Software Team
        • 0 replies
      • Cura 5.10 stable released!
        The full stable release of Cura 5.10 has arrived, and it brings support for the new Ultimaker S8, as well as new materials and profiles for previously supported UltiMaker printers. Additionally, you can now control your models in Cura using a 3D SpaceMouse and more!
          • Like
        • 18 replies
    ×
    ×
    • Create New...