Jump to content

Small pieces attached to outside of the print


Crash55

Recommended Posts

Posted · Small pieces attached to outside of the print

On both my Ultimaker 3 and Ultimaker S5 I get little pieces of the ABS material sticking off the side of the print (see pictures).  This is using the AA 0.8 core.  If I use the AA 0.4 core I get smaller versions of these but still some.  The part is U shaped and it is always on the inside of the U.  

I am printing the same part on a Lulzbot Taz 6 and there the most  get are a few thin strands I can easily brush away.

20200409_122328.jpg

20200409_122333.jpg

  • Link to post
    Share on other sites

    Posted · Small pieces attached to outside of the print

    These "insect antennas" come from the nozzle leaking while traveling through air. Upon arriving at the next wall, it deposits that leak as a drop on the side of the wall. Upon the next layer, the drop is deposited on top of the existing drop. And so on, causing a nice insect antenna.

     

    If you watch closely while printing, you can see the antennas growing with each nozzle pass.

     

    So you need to tune your settings for less leaking while traveling (print slow, cool, thin layers, enough retraction, travel fast through air), or for not traveling through air at all, if the model allows it. But I have never printed ABS (apart from one test cube), so I can't give more specific tips.

     

    Here a few pics: one closup, and the other showing the dimensions of the piece related to other parts and a ruler (in mm and cm). This is printed with a 0.4mm nozzle, in PLA, after I forgot to switch retraction on.

     

    microscope5.thumb.png.0a792ceff97c232fc3c2e9ac90f6de48.png

     

    microscope10.thumb.png.f19ba929a276abe9c32cc4b0c807b4c9.png

     

     

     

  • Link to post
    Share on other sites

    Posted · Small pieces attached to outside of the print

    That was what I was afraid you were going to say.  I am trying to turn out lots of these headbands so I need to print as fast as I can.  Guess I will tweak things until I get a minimum number of antennae.

     

    I think the reason I am seeing this on my Ultimakers and not the Lulzbot is due to the different feed mechanisms.  The Lulzbot is pulling whereas the Ultimaker is pushing.

  • 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

      • UltiMaker Cura 5.7 stable released
        Cura 5.7 is here and it brings a handy new workflow improvement when using Thingiverse and Cura together, as well as additional capabilities for Method series printers, and a powerful way of sharing print settings using new printer-agnostic project files! Read on to find out about all of these improvements and more. 
         
          • Like
        • 18 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...