Jump to content
UltiMaker Community of 3D Printing Experts

Cura Slice bugging


Recommended Posts

Posted · Cura Slice bugging

Did you create this model or did you download it?  I think it has errors.  What CAD do you use (I have different advice depenind on the CAD).


Cura has an amazing plugin to test your model to see if something is wrong with it and can repair a very few of the many potential problems:
In the upper right corner of Cura click "marketplace" and make sure you are on the "plugins" tab and install "Mesh Tools".  Then restart Cura.  Now right click on your model, choose "mesh tools" and first choose
"check mesh", then "fix model normals" and "fix simple holes" to see if that helps.  Cura doesn't fix most is

  • Link to post
    Share on other sites

    Posted · Cura Slice bugging

    @gr5 Hello, thanks for the tips but it is not working. i make the models my own with (Sketchup). and i remade a piece of this model and now are my screw threads not full round anymore (In Cura in my software and online software its round) See screenshot. do you now how to fix that?


  • Link to post
    Share on other sites

    Posted · Cura Slice bugging

    @gr5 I fixed the with and the gray and also tryed the plugin but its still not round. see picture (Also picture from sketchup)


  • Link to post
    Share on other sites

    Posted · Cura Slice bugging

    See red arrow in my photo - if any of those triangles have the normal backwards then it would do exactly as you show in the photo. Or if any of those triangles were missing (just a hole instead of a triangle).


    The thing I hate about sketchup is that it even allows you to create holes in your walls of your solid.  This concept, "hole in the wall of a solid" doesn't make sense in the real world - only sketchup.  And most other CAD software won't even allow you to create such a thing as most CAD software is for creating real life things.  Sketchup lets you create infinitely thin fantasy things.


    Sorry for the rant.


    Try those plugins for sketchup I linked you to - they can check all the normals automatically and let you know if your part is manifold (has no holes in "walls") or not.


    Again - i hope my concept is clear because in real life such a thing is not possible.  It's hard to describe something that I can't touch, see, photograph - something that only exists in certain CAD software like sketchup.


    Also in Cura you can try xray view and if you see any tiny red triangles in that blue hole in the photo above then those are missing triangles.


    So to clarify - the most likely issue is either a missing chunk of "wall" or a backwards "normal".


    Normals tell the STL which in turn tell Cura - which side of every triangle faces solid and which side of every triangle faces air.


    Screenshot from 2020-06-29 13-18-06.png

  • Link to post
    Share on other sites

    Posted · Cura Slice bugging

    You could also upload your STL and sketchup model and someone nice here might look it over and find the exact issue.  Lots of people here do that all the time.

  • 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 5.3 stable released
        In this stable release, Cura 5.3 achieves yet another huge leap forward in 3D printing thanks to material interlocking! As well as introducing an expanded recommended print settings menu and lots of print quality improvements. Not to mention, a whole bunch of new printer profiles for non-UltiMaker printers!
        • 31 replies
      • Here it is. The new UltiMaker S7
        The UltiMaker S7 is built on the success of the UltiMaker S5 and its design decisions were heavily based on feedback from customers.
        So what’s new?
        The obvious change is the S7’s height. It now includes an integrated Air Manager. This filters the exhaust air of every print and also improves build temperature stability. To further enclose the build chamber the S7 only has one magnetically latched door.
        The build stack has also been completely redesigned. A PEI-coated flexible steel build plate makes a big difference to productivity. Not only do you not need tools to pop a printed part off. But we also don’t recommend using or adhesion structures for UltiMaker materials (except PC, because...it’s PC). Along with that, 4 pins and 25 magnets make it easy to replace the flex plate perfectly – even with one hand.
        The re-engineered print head has an inductive sensor which reduces noise when probing the build plate. This effectively makes it much harder to not achieve a perfect first layer, improving overall print success. We also reversed the front fan direction (fewer plastic hairs, less maintenance), made the print core door magnets stronger, and add a sensor that helps avoid flooding.

        The UltiMaker S7 also includes quality of life improvements:
        Reliable bed tilt compensation (no more thumbscrews) 2.4 and 5 GHz Wi-Fi A 1080p camera (mounted higher for a better view) Compatibility with 280+ Marketplace materials Compatibility with S5 project files (no reslicing needed) And a whole lot more  
        Curious to see the S7 in action?
        We’re hosting a free tech demo on February 7.
        It will be live and you can ask any questions to our CTO, Miguel Calvo.
        Register here for the Webinar
        • 18 replies
      • UltiMaker Cura Alpha 🎄 Tree Support Spotlight 🎄
        Are you a fan of tree support, but dislike the removal process and the amount of filament it uses? Then we would like to invite you to try this special release of UltiMaker Cura. Brought to you by our special community contributor @thomasrahm
        We generated a special version of Cura 5.2 called 5.3.0 Alpha + Xmas. The only changes we introduced compared to UltiMaker Cura 5.2.1 are those which are needed for the new supports. So keep in mind, this is not a sneak peek for Cura 5.3 (there are some really cool new features coming up) but a spotlight release highlighting this new version of tree supports.  
          • Heart
          • Like
        • 24 replies
    • Create New...