Jump to content
UltiMaker Community of 3D Printing Experts

Material buildup under silicon cover


Recommended Posts

Posted · Material buildup under silicon cover

Any idea what is happening here or what could cause this to occur? I think the clear part is ultimaker PC because that is the only transparent filament I have, similarly the "white-ish" glob must be ultimaker ABS. 



  • Link to post
    Share on other sites

    Posted · Material buildup under silicon cover

    It happens for example when the model gets loose during a print and the print head moves the part around. The material is somehow blocked when leaving the tip of the nozzle and filament goes through the silicon cover into the head. So you had luck that you have seen is early, otherwise your whole head gets floated.


    Always check the condition of the silicon cover, as soon you see that it is not ok anymore, like the right one on your picture, you should replace it.

  • 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...