Jump to content

Slicer help Part missing geometry


Recommended Posts

Posted · Slicer help Part missing geometry


I have been printing a model of a building, but when I try to slice the roof it misses out part of the geometry.


In 3DS max, thinking it could be the roof was too thin, we have tried adding thickness to the roof,

Thinking it could be the geometry only slightly touching in one area, we tried merging geometry,

Thinking it could have been some error caused by the seperate triangles coming out of the main roof, we remodelling from scratch in a different order. 
In Cura, I've tried all combinations of 'Mesh Fixes' options, the only one that part works is Remove all holes', but this only enabled the slicing of the vertical window section, but the roof still wont slice. 


It's probably something obvious, but I can't work out why it's not working when every other bit of the model has worked with zero problems


Any pointers would be really appreciated!

Roof model preview.png

Roof not sliced properly.png

Roof window sliced.png

Roof xray view.png

main roof.stl

  • Link to post
    Share on other sites

    Posted · Slicer help Part missing geometry

    Hi, thanks for your reply.

    We have tried remodelling in a few ways, including redrawing, adding thickness, merging vertices, merging all geometry, but we can only get it to print the vertical piece. 


    I'm not sure what the sub-mesh error is in relation to, as it's been modellign the same way as the rest of the building and that's printed fine?


    Do anyone have any idea as how we can model this or get it to print, why it's saying not watertight?

  • Link to post
    Share on other sites

    Posted (edited) · Slicer help Part missing geometry

    The main problem is:
    it's not a single, solid part, but 12 individual "tiles" that are partly just touching each other at a single edge, partly overlap each other (check the small window), and it seems like the roof of the small window is "floating" in air (I'm not sure with the latter).


    I don't know how 3DS max works, but the main goal is indeed to merge all pieces together to a single solid object (no "floating" parts, no intersections, no additional "internal" walls).





    3D-Builder "repairs" to stl-file to this, dunno if it comes closer to what you expect? mainroof.stl


    (and sorry for all the quotation marks 😊)


    If you prepare it for printing on an FDM printer, be aware that the whole part touches the build plate only on a single edge. So you have something to work out to ensure proper adhesion.




    Edited by tinkergnome
    • Like 1
    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 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
          • Like
        • 2 replies
      • UltiMaker Cura 5.7 stable released
        Cura 5.7 is here and it brings a handy new workflow improvement when using Thingiverse and Cura together, as well as additional capabilities for Method series printers, and a powerful way of sharing print settings using new printer-agnostic project files! Read on to find out about all of these improvements and more. 
          • Like
        • 26 replies
    • Create New...