Jump to content
Ultimaker Community of 3D Printing Experts

UMO with "jerky" motion


trevox
 Share

Recommended Posts

Posted · UMO with "jerky" motion

Hi!

I have a UMO that is 5 years old by now. After not having used it for a while, I started it again today.

It behaves as usual for a while, maybe a layer or two, then it start behaving extremely weird.

The steppers motors randomly stop for a fraction of a second before starting again, creating huge offsets in the print.

 

When I stop the print, I can hear the stepper motors making "knocking" sounds as if that stopping behaviour is still active.

 

Please have a look at videos here: https://www.dropbox.com/sh/uchybg5w90g0x28/AAC-gMREDlmU-HKnsFPo_9DMa?dl=0

 

Why is this happening?

 

Thanks for your help!

  • Link to post
    Share on other sites

    • 2 weeks later...
    • 1 month later...
    Posted (edited) · UMO with "jerky" motion

    Cable break? Connection? Stepps lost because of sticking guidance? Check how easy axis movment is withour motor, or turn motor when off. Turn motor on while move and try to get it hold by fingers to feel how much torque motor has. Apply the same torque when motor off, and feel if guidances are free easy move.

    Edited by moschidreamer
  • Link to post
    Share on other sites

    Posted · UMO with "jerky" motion

    Just an idea: can you check if your fan at the bottom is running? I have seen something like this before, loosing steps in the first few layers, a wire of the fan broke off.

  • 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

      • The Ultimaker Showcase — October 14. What's new?
        Your dear friends at Ultimaker have some exciting news and insights for you!
         
        • 0 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
        • 8 replies
    ×
    ×
    • Create New...