Jump to content
Ultimaker Community of 3D Printing Experts

Problems with fluctuating temperature on extruder 2

Recommended Posts

Hi all!

I just received my UM3 Extended and I have performed some testprints. On extruder 1 (left) everything works just fine. I set it to 210 degrees and the printer pretty much holds that temperature. On extruder 2 I set the temperature to 180 and every now and then the temperature drops 10 degrees resulting in bad print. I've used a 5mm cylinder as a testprint and where those fluctuations in temperature occurs, there is a change in the diameter of the cylinder.

I've switched place of the two print cores but the problem remains on extruder 2 (right)

I've attached the temperature chart and a picture of the print so you can see how the temperature change affects the print.

Any suggestions?





Share this post

Link to post
Share on other sites

You should contact your reseller.  I think some wire is loose in the head maybe or the connection is too high or too low and not making good contact with the temp sensor.

The answer I got from the reseller was pretty much what you said, that in some cases there has been a connection problem between the main circuit board and the head. They advised me to test to make sure the connector in the head was inserted properly. I will test this later this evening and report back.

Share this post

Link to post
Share on other sites

Minutes ago someone just told me you should push the wires further down into the head and then to also put some tape around them so there is a tighter fit and they don't slide up again.

Having only tried a small print of about 20 minutes everything looks ok now! I've just started a longer 4 hour print now so that will be the final test. But so far so good!

I will add some tape to ensure the connector doesn't give me any more headache! Thanks for your help!!


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

    • How to 3D print with reinforced engineering materials
      Ultimaker is hosting a webinar where we explain how you can achieve and maintain a high print success rate using these new reinforced engineering materials. Learn from Ultimaker's Product Manager of Materials and top chemical engineer Bart van As how you can take your 3D printing to that next level.
      • 0 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!