Jump to content
UltiMaker Community of 3D Printing Experts

Cura applying bridge settings where it's not suppose to


Recommended Posts

Posted · Cura applying bridge settings where it's not suppose to

I'm getting an issue where Cura is applying bridge settings on top of solid fill layers. I always set Bridge Skin Support Threshold to 95% because otherwise Cura almost never applies bridging to the skin. This setting seams backwards to me but whatever. The attached images illustrate this. The first one is a simple test object with a bridge operation. As you can see it gets to the point where it needs to start printing solid top layers, then there is a bridge during that. But it's applying the bridge settings to the skin across the whole layer on top of the solid layer.



And here is a practical example. Again the bridge needs to happen pretty close to the top layers. But it's applying bridge settings to the whole layer instead of only where the bridge is happening. Not only is this a structural issue, it is also an aesthetic issue as seen in the following layer in this image. Part of the layer with the bridge is also a visible top layer.



Here is what it should be doing. This is Simplify3D so the colors are a bit different but you can see that it's only applying bridge settings to the overhanging part.



Is this a bug? I tried just about every setting imaginable and cannot get it to slice correctly. 

bridging error.jpg

  • Link to post
    Share on other sites

    Posted (edited) · Cura applying bridge settings where it's not suppose to

    I'd be happy to supply a project file. I will do that as soon as I get home from work today.


    Edit: I have uploaded the test object file from my first image above.


    Edited by Exitaph
  • Link to post
    Share on other sites

    Posted · Cura applying bridge settings where it's not suppose to

    Sorry, I haven't looked at this yet. I will probably get around to it over this weekend.

  • Link to post
    Share on other sites

    Posted · Cura applying bridge settings where it's not suppose to

    Hello @Exitaph, I have reworked the bridge skin processing so that it will segment skins into separate bridged and non-bridged regions. I think it will do what you are requesting. It was quite an overhaul so I wouldn't be surprised if there are some new quirks.




    I have built Cura releases for Linux and Windows so if you can use one of them you can try it out and I would be grateful of any feedback you may have. You can find my releases at...




    Once proven to be good, I will submit the changes to Ultimaker to be incorporated into a future release although they are so slow to process contributions that it could be a very long time before that happens.


    • Thanks 1
    Link to post
    Share on other sites

    Posted · Cura applying bridge settings where it's not suppose to

    Oh wow thank you so much! I will try this as soon as I can and let you know if it works.

  • Link to post
    Share on other sites

    Posted · Cura applying bridge settings where it's not suppose to

    That appears to have fixed it! It even fixed some other areas that were doing something similar. I'll have to do some test prints.


  • 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!
          • Thanks
        • 21 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.  
          • Like
        • 22 replies
    • Create New...