Jump to content
Ultimaker Community of 3D Printing Experts

Brown bubbles


Xenoyx
 Share

Recommended Posts

Posted · Brown bubbles

Hi guys,

I'm pretty new at 3D printing. I've had some workshops for 3D printing and a friend of me asked me if I could build him a 3D printer (Ultimaker Original+). Yet it works, but after a while of printing, weird brown bubbles or something appear. They come most of the time when the filament gets pulled back to go to the second print (pictures are on the bottom). The brown plastic will become a bubble, the printer head will bump to the bubble every time and make the bubble even bigger, until it makes the printer to move the 3d print.

Do you guys know why this is happening and how to get rid of it?

Greetings,

Xenoyx

IMAG0085.thumb.jpg.e824f45ac68b4aa206cd275de757f922.jpgIMAG0082.thumb.jpg.3820297dea12cd5c531ab0f013cd01f3.jpg

IMAG0085.thumb.jpg.e824f45ac68b4aa206cd275de757f922.jpg

IMAG0082.thumb.jpg.3820297dea12cd5c531ab0f013cd01f3.jpg

  • Link to post
    Share on other sites

    Posted (edited) · Brown bubbles

    Probably the nozzle it's dragging filament from the first layers, then it builds more and drops burned on the print. Check the first layers and adjust the bed alignment so it don't drags filament.

    Also the temperature could be too high.

    Edited by Guest
  • Link to post
    Share on other sites

    Posted · Brown bubbles

    Probably the nozzle it's dragging filament from the first layers, then it builds more and drops burned on the print. Check the first layers and adjust the bed alignment so it don't drags filament.

    Also the temperature could be too high.

     

    As temperature I use 215 degrees of Celsius. The first layers look nice, but after a while (5mm or so) the bubbles appear. I will test soon!

  • Link to post
    Share on other sites

    Posted · Brown bubbles

    The nozzle could be a little bit too close to the bed, so it drags the printed filament and it builds around the nozzle tip.

     

    Ah that can be because of the calibration method (A4 paper), I have very cheap paper, maybe its thinner... thanks for your help!

    • 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
     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...