Jump to content
Ultimaker Community of 3D Printing Experts

Cura creating blobs... possibly due to retraction settings

Recommended Posts

Hi everyone. I'm having some issue with Cura creating blobs sometimes.

Below is an image showing one print done in Cura and another done in Simplify3D with identical settings.


The problem isn't the retraction distance or speed because they are set identically. I believe the problem is how Cura does it's retraction compared to S3D. It seems as though S3D does the retraction while moving from one point to another, minimizing the oozing, whereas Cura pauses, retracts, moves and then extrudes again, which causes a bunch of oozing and resulting in blobs.

Has anyone else experienced this? Are there any work arounds?


Share this post

Link to post
Share on other sites

Afaik cura 2.4 can retract+wipe for um3 profiles, but I doubt it will do it for um2 since ultiflavor doesn't allow that to happen since the retraction distance is a separated gcode of um2 that works according the machine material profile selected. Probably making a custom profile and using reprap flavor could allow to do that on cura. Maybe @nallath can put more light on the new 2.4 options, I don't use it but probably there's something to do that now.

Edited by Guest

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!