Jump to content

(Lack Of) Z-Hop woes...


AEtherScythe

Recommended Posts

Posted · (Lack Of) Z-Hop woes...

On the latest CURA 5.x as of this date...
I have enabled every imaginable Z-hop related feature to try to stop my head scraping across the surface of my part.
No joy.

Please advise what information you might need to help me solve this problem?

B83893BD-8F0D-4892-8799-8BD3BF32A831.jpeg

  • Link to post
    Share on other sites

    Posted · (Lack Of) Z-Hop woes...

    Hi, @Dustin. Thank you for that.
    I clearly need a little more help with interpreting which option will help me most here.

     

    I am using Combing mode "All" currently.


    My Z-Hop settings are based on retraction, so I definitely want retraction to occur over the top layers, but what I was really hoping to achieve is to avoid traveling over printed parts altogether -- would be better to go around the outside, not just for this part but for other work using TPU, where I have some oozing and I don't want the "hairs" being deposited over the top surfaces.


    I care about quality, not speed, for this work.

     

    I guess I was hoping for a Combing mode of "Avoid Top Layers" -- I have the "Avoid Printed Parts When Traveling" enabled.
    It seems these settings are either in conflict or do not work the way I had expected.

     

    Pretty please could you make a recommendation here?

     

    image.thumb.png.8b46c7ba4e1a2d9b1d307f216937ae14.png

  • Link to post
    Share on other sites

    Posted · (Lack Of) Z-Hop woes...

    You can download the settings guide plugin for more details/images on the settings. 


    I would guess this should work:

    - Choose combining “not on outer surface” (All also works but takes much longer due to many unnnessesary retracts in infill areas). 

    - Enable “travel avoid printed parts”

    - Enable “z hob when retracted”

    - Enable “z hob only over printed parts”

    - increase z hop height if needed

     

    There is a known bug in Cura that avoiding parts does not work during a nozzle switch travel move. However based on your photo this does not seem to be the issue. 


    if that is not enough:

    - Set Max comb distance to 1mm (basically always retract)

    - Enable a prime tower (to wipe oozed material from the nozzle after a switch)

    - make sure the PVA is dry. It appears wet (white color from water bubbles) and this can cause oozing. Same for TPU and Nylon. It needs to be super dry. 
     

     

     

    • 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

      • 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...