Jump to content
Ultimaker Community of 3D Printing Experts

Recommended Posts

When I change filament per the manual I go to Material/PrintCore > Material 1] > Change . The manual says core will heat then material will reverse. On my printer when I hit change nozzle doesn't heat it just does a cold pull?

Is this normal, has firmware been changed?

Share this post

Link to post
Share on other sites

(I'm assuming this is an UM3)


I was confused by this at first too, but this is normal.


After a print, the machine will retract the filament automatically, so it doesn't need to heat the nozzle when removing the filament (it should heat the nozzle when inserting filament).


Share this post

Link to post
Share on other sites

Yes UM3, thanks for the reply. First time I tried it made a popping noise, I though for sure I had made the wrong selection and broken my new toy. Have had less than a week, still getting used to the noises it makes. I now use the following method.




Edited by mcdavidr

Share this post

Link to post
Share on other sites

Yes, I've had that happen a few times too, usually with some more exotic materials (afaik never with PLA for me).


I think this happens when the retraction was not done correctly and some force needs to be applied to pull the filament loose (maybe the nozzle was a bit too hot, the distance was too short or there was a bit of slippage on the extruder gear)


If this happens a lot with some material, or you're worried, you can always manually pre-heat the nozzle before changing.

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.
      • 1 reply
    • "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!