Jump to content
Ultimaker Community of 3D Printing Experts

Extrusion problems Ultimaker 3 Extended


Recommended Posts

Posted · Extrusion problems Ultimaker 3 Extended

For my work I am working on a 3D printing project in which impact protectors have to be printed with TPU 85A on our Ultimaker 3 Extended. For this I made a print profile in Cura, where I made a copy of the standard TPU 95A profile and then adjusted the settings that are recommended on the website of the manufacturer of the filament that I use. At first glance, everything seems to be normal:


Looking good


Now every time, when printing the first layer, the lines in the third part are extruded thinner and thinner and eventually no more filament comes out of the extruder during printing, see the result below:


Print failure


I've already been playing with the bed-distance of the first print layer, but that doesn't help. I also had the idea that the pressure of the feeder was set too high, so I have also reduced that a bit, but that is to no avail. I also noticed that the roll of filament turned a bit stiff on the shaft, so I put some lubrication in between so that the feeder doesn't have to pull too hard on the roll (I thought that could also cause problems). That also made no difference.


Do any of you know what could be causing this problem and what I can do about it? I have had exactly this problem before with PLA, where I have also not gotten the problem solved. Another factor was that the filament was stuck in the extruder. The cause of this is probably too high a temperature of the hot-end, but I have not yet found the ideal temperature and had time to test it.


I have also attached the current 3mf-file.


I look forward to your reactions!

UM3E_3 sets kartelrandbeschermers.3mf

  • Link to post
    Share on other sites

    Posted · Extrusion problems Ultimaker 3 Extended

    There are many possible causes but one that strikes me immediately is that the 3rd fan my not be rotating.  In the print head there are 2 side fans but there is also a fan in the "door" of the print head.  Make sure that's spinning when either core is above 60C.

  • 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...