Jump to content
UltiMaker Community of 3D Printing Experts

Internal Supports missing first layer


Recommended Posts

Posted (edited) · Internal Supports missing first layer

I'm having a problem.  Internal supports seem to be missing the initial layer.  I had this problem in Cura 4.8, and just installed 4.10.0 hoping it would resolve the problem, and it still exists.  Using Cura defaults for all options except "Generate Support" is checked, on the "Generic PETG" "Draft - 0.2mm" profile. 


For example, attached is an OpenSCAD sourceSupportTest.zip file and .stl for a simple hollow cylinder with a single-layer bottom.  When I preview and review layers:

1. Layer 1 covers the entire bottom of the cylinder, as expected.

2. Layer 2 (attached) starts building the walls, as expected.  But the support structures aren't getting built which isn't as expected.

3. Layer 3 (attached) continues building the walls, as expected, and starts building the support structures.


I've tried making the initial layer all kinds of different thicknesses, as well as selecting different profiles (0.1, 0.15, 0.2, 0.3), and the problem persists.  Eliminating the single-layer bottom eliminates the problem; the support structures start getting built on Layer 1 as expected. 


I'd appreciate any help that anyone might have.




Edited by FrankSchwab
Added comment about removing layer 1
  • Link to post
    Share on other sites

    Posted (edited) · Internal Supports missing first layer

    Hi @FrankSchwab


    Welcome in here.


    I downloaded your file and looked at it using Cura 4.10.0.


    It came up just fine for me, -cannot see any problem - here's a picture in preview mode.




    Here you see the support for the top of the closed cylinder (yellow climbing "zig-zag" pattern), the blue infill in between the wall -and there is also a tiny support in between the top layers.


    I'm using only skirt found under "Build Plate Adhesion".


    Maybe I'm missing something here?










    Edited by Torgeir
    Text error.
  • Link to post
    Share on other sites

    Posted (edited) · Internal Supports missing first layer
    16 hours ago, Torgeir said:

    Hi @FrankSchwab


    Maybe I'm missing something here?











    Thanks for looking, Torgeir.

    Your image is on layer 16 or 18.  Can you look at layer 2  and layer 3 (or 3 and 4, depending on the layer thickness you use) instead? 



    Edited by FrankSchwab
  • Link to post
    Share on other sites

    Posted · Internal Supports missing first layer
    15 hours ago, obewan said:

    Setting the 'support Z distance' too 0 will start the support on layer 2 instead of layer 3.



    Ding, Ding, Ding, I think we have a winner!  This isn't a "bug", it's a "feature".  After finding the setting and reviewing the docs, I understand now, and this is intentional behavior to allow supports to be easily removed on the bottom side as well as the top side of the support. 


    Sigh.  10 million options.  Some day I'll learn half of them.


    Thanks, obewan.

  • 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
          • Like
        • 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
        • 25 replies
    • Create New...