Jump to content

Cura thinks file is not watertight


Steventhomas

Recommended Posts

Posted · Cura thinks file is not watertight

Hi Guys,

I have no idea why cura keeps telling me the file is not watertight. 

When I go to slice the file it creates a top and bottom where there is none and infills it, this happens no matter what orientation the part is and depending on orientation is different.

 

If anyone has any ideas where Im going wrong that would be greatly appreciated

Screen Shot 2021-09-14 at 9.21.12 am.png

Screen Shot 2021-09-14 at 9.29.11 am.png

Screen Shot 2021-09-14 at 9.29.36 am.png

  • Link to post
    Share on other sites

    Posted · Cura thinks file is not watertight

    You could post the STL file so I could have a look at it.  You probably have the normals backwards in many parts of the file.  An stl file has an unordered list of triangles in 3d space.  The normals tell cura which side of each triangle faces in or out.  You can fix the normals with cura or in cad.  normals are very easy to fix either way.  For example in sketchup or blender it's super easy to fix them all.

     

    If this model is from blender google about the "remesh modifier".  And also about "normals" in blender.
    More here: https://www.sculpteo.com/en/tutorial/prepare-your-model-3d-printing-blender/

    If this model is from sketchup read this:
    https://i.materialise.com/blog/3d-printing-with-sketchup/

     

     

    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"

     

    Also in cura "mesh fixes" make sure "remove all holes" is unchecked.

    • Like 1
    Link to post
    Share on other sites

    Posted · Cura thinks file is not watertight

    The normals are not takes into account when checking the water-tightness of a model. This article from the SettingsGuide plugin explains what manifold or watertight is: https://github.com/Ghostkeeper/SettingsGuide/blob/master/resources/articles/troubleshooting/missing_parts.md#non-manifold-meshes

  • Link to post
    Share on other sites

    • 1 year later...
    Posted · Cura thinks file is not watertight

    This thread is very old, however I just got the dreaded "model is not watertight" in the latest Cura.  I did two things (I know, should have done one at a time to be sure which solved it).  

    1. I opened my Blender project and changed the measurement units from Imperial to Metric. 

    2. Selected the object and opened Object Data Properties. Chose Remesh, left the defaults of Voxel mode, size = .1 m, Adaptivity = 0 m, Fix Poles is checked and Preserve volume is checked.  Clicke on Voxel Remesh beneath those fields. 

     

    I saved the project then exported my stl.  It now opened without warnings in Cura.  

     

     

  • 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...