Jump to content
Ultimaker Community of 3D Printing Experts

Why is Cura filling in my holes please ?


Magicmerly
 Share

Recommended Posts

Posted · Why is Cura filling in my holes please ?

I have an STL with 6.6mm holes in (see pic) when I slice it for my ender 3, the holes get filled in (despite me not telling Cura to do that) 

 

I've printed earlier variants of this with larger holes in with no problem, so not sure why Cura is filling in the holes now, please advise.

 

 

Beforeslice.jpg

  • Link to post
    Share on other sites

    Posted · Why is Cura filling in my holes please ?

    It could be that the model is not manifold (and confuses Cura), or it could be that you have eg the setting "Remove all holes" enabled. Save a project, post a link to it, and we can have a look.

  • Link to post
    Share on other sites

    Posted · Why is Cura filling in my holes please ?

    Well AHoeben nailed it.  When the warning comes up indicating that a model "isn't watertight" then usually the model needs to be repaired.  There are some models that will slice with errors but those errors can cause Cura to become confused and make mistakes.  If you haven't done so - you can load Mesh Tools from the Cura Marketplace.  In this case it couldn't repair the model but it did point to problems.

     

    I used https://formware.co/OnlineStlRepair for the repair.

    Here is the report:

    -> Analysed your file:
    --> 5312 Naked edges (?)
    --> 66 Planar holes (?)
    --> 0 Non-planar holes (?)
    --> 0 Non-manifold edges (?)
    --> 0 Inverted faces (?)
    --> 0 Degenerate faces (?)
    --> 0 Duplicate faces (?)
    --> 0 Disjoint shells (?)
    -> Repairing: 100.00%
    ----- Repair completed in 43592ms ------
    -> Vertex count changed from 34504 to 34440 (-64)
    -> Triangle count changed from 64920 to 68944 (+4024)

     

    Here is your model before the repair.  You can see that the top surface is an error and when I opened it the warning came up.

    Untitled.thumb.png.25571faa4c64338e342ca420847fcab1.png

     

    Here is the repaired model sliced in 4.12.1.  Much better.

    FYI MS 3D Builder repaired it as well.

    Untitled2.thumb.png.f83c50ce500b84e7976c3ffbd581e23e.png

     

     

     

     

    6.6mmdiaholes_fixed.stl

    • Like 1
    • Thanks 1
    Link to post
    Share on other sites

    Posted · Why is Cura filling in my holes please ?

    Thanky you Greg, I didn't know about the red part I have learn not one but two things today, thank you 🙂

  • Link to post
    Share on other sites

    Posted · Why is Cura filling in my holes please ?
    10 hours ago, GregValiant said:

    You can see that the top surface is an error and when I opened it the warning came up.

    No, in the normal prepare view the red on top just means that the normals of the model are inside out. That is not (always) an error, though it can be indicative of more being wrong with the model.

  • 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
     Share

    • Our picks

      • New here? Get ahead with a free onboarding course
        Hi,
         
        Often getting started is the most difficult part of any process. A good start sets you up for success and saves you time and energy that could be spent elsewhere. That is why we have a onboarding course ready for
        Ultimaker S5 Pro Bundle, Ultimaker S5, Ultimaker S3 Ultimaker 2+ Connect.   
        They're ready for you on the Ultimaker Academy platform. All you need to do to gain access is to register your product to gain free access. 
        Ready? Register your product here in just 60 seconds.
          • Like
        • 11 replies
    ×
    ×
    • Create New...