Jump to content

Under extrusion then nozzle temp issue

Recommended Posts

Posted · Under extrusion then nozzle temp issue



Printer: Ultimaker 2+ Extended (I purchased a 2 Extended with an upgrade kit)

Firmware:  vers 2.4x


I've had this printer since 2016 and have experienced no issues until recently.


I only print branded Ultimaker PLA filament. Slice in Cura and just print on defaults. That has worked for almost 7 years ! But...


My prints recently began under extruding. No change in printer location or ambient room temperature. I have:


1. Replaced the bowden tube.

2. Replaced the teflon collar.

3. Stripped and cleaned feeder - it was fine as tension was set to light setting anyway.

4. Tried old and brand new filament.


Now the nozzle is not hot enough to melt the filament. If I set the nozzle temp to 240 then hold filament against it - nothing. Barely even marks it. Obviously I cannot get filament through the print head. 


I'm thinking this is likely a temp sensor issue, but don't want to spend any more money without some degree of certainty.


Curious if others have similar experience?






  • Link to post
    Share on other sites

    Posted · Under extrusion then nozzle temp issue


    had similar problems. The extrusion only worked cleanly when printing very slowly or from a nozzle diameter of 0.6.
    The print nozzles were constantly (supposedly) clogged. PTFE couplers and Bowden cables did not make it any better. The Ex1 motor driver was still good.

    I changed the feeders on my old UM2(+) and UM2+ at some point.
    I had updated the feeders from UM2+ to Bondtech.

    Since then it has been quiet again. This is just an experience report. Of course, I don't know what's wrong with your printer.

    Many greetings

  • 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 5.4 stable released
        The full stable release of UltiMaker Cura 5.4 is here and it makes it easier than ever to remove brims and supports from your finished prints. UltiMaker S series users can also look forward to print profiles for our newest UltiMaker PET CF composite material!
          • Like
        • 58 replies
    • Create New...