Jump to content
Ultimaker Community of 3D Printing Experts
Sign in to follow this  

Missing Geometry in Final Print

Recommended Posts

I am having some trouble getting CURA to recognize certain holes in my model.

The hole is present in Sketchup, also in CURA's "Normal" and "X-Ray" view. But when I look at the actually layers it omits this hole completely - and in actuality as I found out at the end of a print. I tried a few different customizations and also the stock options and the paths were rendered just the same. It also ignores them regardless if the file is a .dae or .stl

How can I rectify this?

Also, is there a guide for formatting the models correctly for CURA? I would be interested in learning some of the tricks.



Share this post

Link to post
Share on other sites

Try unchecking all the "fix horrible" checkboxes. "type A" is probably checked and is probably filling your hole.

They are in the expert menu.

The problem probably relates to "surface normals" which tell cura which side of a polygon faces air and which side faces interior.


Share this post

Link to post
Share on other sites

The main thing for a good STL is the xray check. If you see no red then the model is pretty good and unchecking all the fix horribles should give you a good result.

Also try not to let polygons be smaller than .1mm.

Cura slices the polygons into a layer and gets a set of lines in no particular order (stl doesn't say which polygons are connected) so then cura strings the lines up into loops. Sometimes two unrelated loops have a point too close together. I've seen this a lot. Cura picks the wrong point and it comes out all wrong. This only happens when you have lots of details much too small to print.


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
Sign in to follow this  

  • 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!