Jump to content
UltiMaker Community of 3D Printing Experts

Help with some extrusion issues


Recommended Posts

Posted · Help with some extrusion issues

Dear Makers,

I would like your help understanding why I've had some strange results while printing this object: http://www.thingiverse.com/thing:65810

The issues I had were:

1 - some dificulty laying the first layer on the top right / top right side of the bed. This situation was improved as I helped push the filament by hand. I suspect some increased tension from thw bowden on that part of the table - maybe...

2 - 'stringy' print (think is called underextrusion) on the left top side of the bed. Mostly on the first layers. Top layers were fine

3 - some overextrusion I believe on the main cover, centered on the bed.


Bed levelled and glued before print - 75º

think 30 or 40mm (will confirm later) and 210º

fans on

PLA - UM2 first rol

Print was left standalone and result was much better than the humble begining would suggest. I will share later.

Here are the pictures - fire away:








pic host





  • Link to post
    Share on other sites

    Posted · Help with some extrusion issues

    It's all about the leveling.

    The portions that print so thin you can barely see it - those have the nozzle too close to the glass.

    The part that is all "stringy" (5th and 6th photo - top left part) - those have the nozzle too far from the glass.

    It may be impossible to level all 4 corners. If this is the case, remove all the screws in the bed (under the glass) and make sure they don't stick up. Some people got the wrong size screws. Or your entire UM2 might be warped. Does the feet sit squarely on the table? Or does it rock?


  • Link to post
    Share on other sites

    Posted · Help with some extrusion issues

    Hi there,

    Yes I came to that same conclusion after reading the visual troubleshooting guide.

    I believe the bed isn't levelled on the back. The UM2 has a large gap and I believe it might be warped.

    What is the solution? Is there any?





  • Link to post
    Share on other sites

    Posted · Help with some extrusion issues

    When I got my UM2 last Thursday I saw a huge gap between one of the feet and table too and was concerned that it might have effect on the print. But I followed the leveling instructions on the first time run and it is printing quite nice from the scratch. So a gap doesn't mean that a leveling is not possible. But I think it is a bit tricky for sure. And the bed is not built strong too, you can see it shake from the smallest vibration..!


  • Link to post
    Share on other sites

    Posted · Help with some extrusion issues

    My bed too is not exactely straight horizontal (left to right) at the back. But because it only has one adjusting screw in the middle of the back of the buildplate I can't see how it should be done. Theoreticely it should be horizontal in the back if it is so in the front almost like a 3 leged chair.


  • 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

      • 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
        • 14 replies
    • Create New...