Jump to content
Ultimaker Community of 3D Printing Experts

Problems with UPET Material....

Recommended Posts

Hi Robin,

This material has high melt strength. That means that you'll have to watch out with retraction heavy prints and print slower in general. I'd say try 40 mm/s @ 0.1mm and work from there.

If you keep having trouble it might be a nozzle clog or your teflon is worn out. Hope this helps!


Share this post

Link to post
Share on other sites

>i put layer 0.3 because when i do 0.2 there is not coming enough material out off the nozzle

With a 0.3 layer you are asking the printer to output more material, not less, than with a 0.2 layer.

So if you have underextrusion, not enough material at 0.2, it will be worse at 0.3, not better.

Try 0.1, and/or print slower, this might help.


Share this post

Link to post
Share on other sites

Hello all,

XT have given very good result fo me so far on most of the prints.

Only on a very challenging print when the nozzle has to go from different place very often without printing much in between the retractions make the filament to worn out and flatten down. At one point the filament cannot be driven forward anymore. Actually I tend to increase retraction length to reduce stringing, which may cause the issue.

The best thing to do then is to change the material, unload it, cut the 0.7 m which is corrupted (with indentation marks) and then re-introduce it to start with a "fresh" filament.

It worked perfectly well for me.

May be the pressure on the feeder notched wheel is not correctly adjusted for UPET.

I print at 50 mm/s with 0.1mm layer, 240 deg C, 110% flow.




Share this post

Link to post
Share on other sites

The print you are trying to do is a very difficult one, especially on that scale.

If you are still working out the details for printing with UPET, I would suggest you use an easier model with less retraction etc.

With bigger surfaces it is easier for you to detect if you are closing in on the ideal settings.


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.
      • 2 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!