Jump to content

Cura Bug: Random Solid Layer in Hollow Cylinders


Recommended Posts

Posted · Cura Bug: Random Solid Layer in Hollow Cylinders

So, I've been printing a number of hollow cylindrical objects, and for a while now too, so I've experienced this problem in 13.12 and the version previous to that. It happens almost every time and I just haven't come forth because I thought the new version would fix it.

So anyway, here's what happens: Random_Solid_Infill_Layer.jpg

Looking at image 4 you can see there is a 'floor', which Cura handles just fine (as in image 1), and then it goes up vertically before opening up into a toroid. In image 2 you can see how Cura creates a solid layer (just one layer thick) throughout the entire inside instead of just the ledge area.

Now, it would seem that something about that ledge 'tripped' Cura into doing this, but I have printed other objects such as a short pipe with spirals on the inside, and out of nowhere special it will make a solid layer. Sometimes this even happens twice. And this sort of thing happens to almost every hollow cylinder I make.

For the time being I just remove this oddball layer with a hobby knife, but if there's any way to fix this I'd really appreciate it!

Link to this particular STL below:



  • Link to post
    Share on other sites

    Posted · Cura Bug: Random Solid Layer in Hollow Cylinders

    It happens with high polygon models if Fix horrible type A is enabled (in the expert menu) this has been made default which makes this bug pop up. I've fixed it for a next release. Workaround is to turn the fix horrible type A off.


  • Link to post
    Share on other sites

    Posted · Cura Bug: Random Solid Layer in Hollow Cylinders

    This happens to me all the time, and it has no relation to the "Fix Horrible - Type A" setting. It even happens on STLs with relatively low poly counts. Nothing shows up in X-ray or other modeling programs. Sometimes it adds a full layer, sometimes it adds a random portion of infill.

    Screenshot of problem:


    Link to STL:



  • 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...