Jump to content
Ultimaker Community of 3D Printing Experts

poor temp control


DPL
 Share

Recommended Posts

Posted · poor temp control

My Ultimaker2 has been printing poorly, with lots of stringing and underextrusion when using "Normal" quick-print settings. I've been perplexed by this for while, but finally got around to pressing an external thermocouple against the nozzle to have an independent temperature reading. Wit the US's display showing a nozzle temp of 210 C, I sometimes get a reasonable reading (within a few degrees), but sometimes 240C. I know it really is that hot because the PLA starts to smoke. So I've got an intermittent problem. I can see that the overheating can cause stringing, but not clear that it could cause underextrusion. Maybe the temp goes low some of the time.

Has anyone else seen this behavior, and is there a recommended diagnostic method? Is there anyway to check the control circuitry for temp control? I know I can replace the temp sensor and make sure it's seated correctly.

Thanks for any input

  • Link to post
    Share on other sites

    Posted · poor temp control

    The old um2 pt100 weren't always very accurate. I had one that was 20deg out and had similar problems like you.

    Replaced it and it was all good after that.

    This is why the um2+ has an improved pt100 that is a lot more accurate.

    If yours is intermittent then it may due to a loose wire, broken wire or the pt100 could be damaged inside.

  • 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

      • 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
        • 11 replies
    ×
    ×
    • Create New...