Jump to content
Ultimaker Community of 3D Printing Experts

Is this under extrusion?

Recommended Posts


This happens from time to time. it mostly happens on the first layer after some infill.

Is this under extrusion? if so, what can I do to helt it? if not, what is it then?

The outher (and inner) surface looks good, there are no string, no deposits from oozing, I don't think there are any problems other than this, and it bothers me.

I had one time where the printer was printing in the air, this was due to a knot on the filament, but can this still course problems? because of the knot, the drive wheel was dirty, so I cleaned it, thus there should be no problem there.

The printer have (only) been running for a week, if that have anything to say..


Share this post

Link to post
Share on other sites


this doesn't look like under extrusion to me but rather the first "bottom" layer after some infill. If the photo depicts the finished object, then it is a huge problem. But if it is just printing one layer and then another few over that one, then it should be fine.

However it could be that the nozzle is a bit clogged. Check out this guide about the atomic method:


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

    • Architect Design Contest | Vehicles.
      We're open for entries! - Design and submit your 3D designs of architectural entourage - vehicles - for a chance to win a large filament pack. Presenting an idea, an architectural design or something as big as an urban project isn't easy. A scaled model can really help to get your idea across.
        • Like
      • 24 replies
    • What The DfAM?
      I'm Steve Cox, an experienced engineer familiar with 3D printing. I wanted to share some DfAM guidelines with this community to help and make stronger parts.
      I'm also an Autodesk Certified Instructor for Fusion 360, so many of the images in ...
        • Thanks
        • Like
      • 23 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!