Jump to content

Why does Cura fill empty space?


tomofo
Go to solution Solved by Slashee_the_Cow,

Recommended Posts

Posted · Why does Cura fill empty space?

I'm new to 3D printing and Cura.

I have designed a Mobius strip shape in Blender, as in attached "Mobius_blender.PNG" screenshot and STL file.

Obviously there is a hole through the middle of this shape.

When I slice the model in Cura, the hole through the middle is filled in. See the yellow part in the middle of the attached "Cura_slice.PNG" and "Cura_slice2.PNG".

This happens with default settings and preferences, supports on or off, and several other variations in attempting to fix it.

I know I will need supports to make this print properly, but why does Cura fill in the middle section?

Thanks in advance for any help or advice.

Mobius_blender.PNG

Cura_slice.PNG

Cura_slice2.PNG

Mobius.stl

  • Link to post
    Share on other sites

    • Solution
    Posted · Why does Cura fill empty space?

    Your model is bad.

     

    It has no faces on the inside:

    image.thumb.png.f3780be145843aba52d75c021f5c17f3.png

     

    Also it looks like the normals are flipped where it joins:

    image.thumb.png.1d707f91c8f228717d39986181eabad1.png

     

    If you're on Windows then Microsoft's 3D Builder app is actually pretty good at fixing broken models. On other platforms you could try something like FreeCAD or MeshLab, but they're a lot more complex. There's also online tools that can fix models. I've attached a fixed version (from 3D Builder) because I can't help but help 🙂

     

    Blender isn't always the best at exporting STL models (CAD software is) so sometimes it works fine, sometimes you have problems. Sorry but I don't know enough about Blender to help try and avoid his happening 😞

    Mobius-fixed.stl

  • Link to post
    Share on other sites

    Posted · Why does Cura fill empty space?

    Thank you for the tips and fixed model. I did not imagine the source STL could be wrong.

  • 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

      • UltiMaker Cura 5.8 beta released
        Another Cura release has arrived and in this 5.8 beta release, the focus is on improving Z seams, as well as completing support for the full Method series of printers by introducing a profile for the UltiMaker Method.
          • Like
        • 1 reply
      • Introducing the UltiMaker Factor 4
        We are happy to announce the next evolution in the UltiMaker 3D printer lineup: the UltiMaker Factor 4 industrial-grade 3D printer, designed to take manufacturing to new levels of efficiency and reliability. Factor 4 is an end-to-end 3D printing solution for light industrial applications
          • Thanks
          • Like
        • 3 replies
    ×
    ×
    • Create New...