Jump to content
Ultimaker Community of 3D Printing Experts
DPL

poor temp control

Recommended Posts

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

Share this post


Link to post
Share on other sites

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.

Share this post


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 | a new interface
      We're not only trying to always make Ultimaker Cura better with the usual new features and improvements we build, but we're also trying to make it more pleasant to operate. The interface was the focus for the upcoming release, from which we would already like to present you the first glance. 
        • Like
      • 114 replies
    • "Back To The Future" using Generative Design & Investment Casting
      Designing for light-weight parts is becoming more important, and I’m a firm believer in the need to produce lighter weight, less over-engineered parts for the future. This is for sustainability reasons because we need to be using less raw materials and, in things like transportation, it impacts the energy usage of the product during it’s service life.
        • Like
      • 12 replies
×

Important Information

Welcome to the Ultimaker Community of 3D printing experts. Visit the following links to read more about our Terms of Use or our Privacy Policy. Thank you!