Jump to content
Ultimaker Community of 3D Printing Experts

Whats wrong with this item?

Recommended Posts


I have some strange problem with an item as you can see in the image here:


At a certain Z-position (around 9.5 mm) the item gets not printed very.

This happens always at the same height. I tested this 3 times and the problem occurs always at the same height.

Then I thought there is something wrong with my UM2 at this height so I printed a testcube.

But as you can see (marked with the blue arrow) the cube prints well that means eversthing is OK with my UM2.

I looked at the gcode but could not fine any abnormal things except that at layer 87 the infill pattern gets more dense.

Then at layer 97 it switches back to previous density. Could this be the reason?

I printed this using Cura 15.09.90.

Thanks for any help!

The STL-file is here:


The gcode file is here:


Edited by Guest

Share this post

Link to post
Share on other sites

Your stl file is faulty.  

NEVER PRINT A FILE without looking at it first in "layer view".  You would have seen the problem right away.  I looked at you gcode file - it looks horrible - just like your print.  If you look at your part in xray view you will see it has an extra face (it's not a printable part as is - it has an interior curved wall) and cura doesn't know which is inside and which is supposed to be not printed and it gets very confused.  Remove the red wall and that should fix the problem.  here is xray view:

RED IS BAD. It means passing a line through your part hits an odd number of walls so it either has a hole or in your case an extra wall.



Edited by Guest

Share this post

Link to post
Share on other sites

Hi gr5,

thanks for reply. I wonder why the result is that bad. I use Autodesk Fusion 360 to create my items and export at STL - I never had probelms with it.

thanks for the tip using the X-Ray view may this is a good indicator.

I never used x-ray view only layer view.

Thanks a lot!

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!