Jump to content

Strange artifacts (seems like 'ringing' - but maybe not?) - Ultimaker 2


johna

Recommended Posts

Posted · Strange artifacts (seems like 'ringing' - but maybe not?) - Ultimaker 2

Printed a plate of Kossel parts last night. Used 100% stock settings ('Normal') print quality / speed / etc....

Low res:

ArGPbuNl.jpg?1

Higher resolution:

http://i.imgur.com/ArGPbuN.jpg?1

Look at the right side where it says 'Kossel' - there's basically an echo of each letter a few times. Same with all of the holes in the piece.

 

  • Link to post
    Share on other sites

    Posted · Strange artifacts (seems like 'ringing' - but maybe not?) - Ultimaker 2

    Yeah, that was suggested in another one of my posts. I know I lowered it, but maybe I need to go lower still.

     

  • Link to post
    Share on other sites

    Posted · Strange artifacts (seems like 'ringing' - but maybe not?) - Ultimaker 2

    I make a lot of hard edged stuff and this plauges me all the time. I have acceleration lowered to around 1500 and it produces happy results for me. on a UM1 anyway.. substantially less shaking too.

     

  • Link to post
    Share on other sites

    Posted · Strange artifacts (seems like 'ringing' - but maybe not?) - Ultimaker 2

    Illuminarti's extrusion test is a sensitive test of ringing. You can see the differences as it gets faster up the column, and compare ringing quantitatively before and after a change.

     

  • Link to post
    Share on other sites

    Posted · Strange artifacts (seems like 'ringing' - but maybe not?) - Ultimaker 2

    morning guys !

    yeah I get that a lot when i have a lot of windows and openings in my outside building wall models.. the print head moves around for the openings and then the movement carries on over to the wall on the right a little.

    If the model is small and needs to be perfect, it has to be printed painfully slowly... sadly if this is a a large part, then you have to print slow and it will take.. a long time...

    Maybe this has also something to do with the fact that the tip of the hotend, the nozzle is so far away away from the centre of the axis it is moving on. So any vibration is increasted because you have a print head waving from its high fixed axis?

    Ian :smile:

     

  • Link to post
    Share on other sites

    Posted · Strange artifacts (seems like 'ringing' - but maybe not?) - Ultimaker 2

    The 'shadows' are created by sudden changes in direction. The head is still 'setteling' back, but its already being forced in another direction. This creates a fairly distinctive wobble.

    Decreasing the acceleration and jerk (acceleration of the acceleration) should fix this.

     

  • Link to post
    Share on other sites

    Posted · Strange artifacts (seems like 'ringing' - but maybe not?) - Ultimaker 2

    So it seems like maybe I didn't lower it, or I've done a factory reset since then. Just lowered it to 3000, will try same print again tonight and see what it looks like.

     

  • Link to post
    Share on other sites

    Posted · Strange artifacts (seems like 'ringing' - but maybe not?) - Ultimaker 2

    Lowered accel from 5,000 to 3,000. Results are better in the ringing, but... maybe not better overall?

    Check this out:

    d3xXEVrm.jpg

    Higher resolution: http://i.imgur.com/d3xXEVr.jpg

    The 'shadow' from the text went away, but the rest of the quality seems to have changed also.

     

  • Link to post
    Share on other sites

    Posted · Strange artifacts (seems like 'ringing' - but maybe not?) - Ultimaker 2

    Did you try to lower the jerk?

     

  • 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

      • Introducing Universal Cura Projects in the UltiMaker Cura 5.7 beta
        Strap in for the first Cura release of 2024! This 5.7 beta release brings new material profiles as well as cloud printing for Method series printers, and introduces a powerful new way of sharing print settings using printer-agnostic project files! Also, if you want to download the cute dinosaur card holder featured below, it was specially designed for this release and can be found on Thingiverse! 
          • Like
        • 10 replies
      • S-Line Firmware 8.3.0 was released Nov. 20th on the "Latest" firmware branch.
        (Sorry, was out of office when this released)

        This update is for...
        All UltiMaker S series  
        New features
         
        Temperature status. During print preparation, the temperatures of the print cores and build plate will be shown on the display. This gives a better indication of the progress and remaining wait time. Save log files in paused state. It is now possible to save the printer's log files to USB if the currently active print job is paused. Previously, the Dump logs to USB option was only enabled if the printer was in idle state. Confirm print removal via Digital Factory. If the printer is connected to the Digital Factory, it is now possible to confirm the removal of a previous print job via the Digital Factory interface. This is useful in situations where the build plate is clear, but the operator forgot to select Confirm removal on the printer’s display. Visit this page for more information about this feature.
          • Like
        • 0 replies
    ×
    ×
    • Create New...