Jump to content
Ultimaker Community of 3D Printing Experts

Contradictory information, what's correct?

Recommended Posts

I've been reading a lot the past few months about 3D printing. And while reading I found some contradictory information.

1)Tension in the filament feeder, position of white clip.

a) Ultimaker official support:



In order to guide the filament properly through the feeder into the bowden tube and print head, it's important that the tension on the feeder is set correctly. If the tension is too high, it means that the knurled wheel of the feeder will dig into the filament, through which it flattens or - even worse - completely gets stuck. This is what we call grinding.

To prevent grinding of the filament it is therefore important to set the tension on the feeder as loose as possible, meaning that the white insert clip should be completely at the top. You can achieve this by inserting one of the hex keys in the hole on top of the feeder and turning it clockwise.


b) 3Dverkstan


Feeder pressure

The amount of pressure that the feeder puts on your filament is adjustable via a small hidden screw accessed at the top of the feeder. To the right of where the bowden tube enters the feeder there is a small hole into which you can insert a hex driver to adjust the tension. The current setting can be seen on the little white dial right below this hole. When the dial is in the upper position the pressure is low and vice versa.

In mid-March of 2014 the spring inside the feeder was changed and the proper setting will therefore differ depending on when you received your printer. For machines from before mid-March of 2014 the indicator should be at the top and for machines after this date the indicator should be in the middle.

So what is in now? Should the white clip be in the middle or on top? If it's correct about the UM2 released after march 2014 that the clip should be in the middle. Why didn't Ultimaker update their page? It's confusing for me as beginner...

Share this post

Link to post
Share on other sites

I think generally, you can tell by looking at it before you mess around with it if it's at the middle or top. The machines come pre-tuned so you probably don't have to mess with it unless you start having issues that point directly to tension.

You can tell if the tension is too high or low by looking at the pattern that is imprinted onto the filament itself after traveling through the knurled bolt. The filament should have little pyramids pressed into it, usually about 3 pyramids wide with equal space between the pyramid imprints. and the filament should be round.

While the documentation may make it seem like an important thing to look at, practically speaking it's almost never the cause of printing issues because it's set by the factory, and it doesn't really change much over time.

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

    • Introducing Ultimaker Cura 3.6 | Beta
      Ultimaker Cura 3.6 | Beta is available. It comes with new features, bug fixes, and UX improvements. We would really like to have your feedback on it to make our stable release as good as it can be. As always, you can download the beta for free from our website, for Windows, MacOS, and Linux.
        • Like
      • 95 replies
    • Print Core CC | Red for Ruby
      Q: For some users, abrasive materials may be a new subject matter. Can you explain what it is that makes a material abrasive when you are not sure which print core to use?
      A: Materials which are hard in a solid piece (like metals, ceramics and carbon fibers) will generally also wear down the nozzle. In general one should assume...
        • Like
      • 30 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!