Jump to content

Using first extruder full print area in two-color print


Recommended Posts

Posted · Using first extruder full print area in two-color print

I'm printing a two-color design with an Ultimaker 3.  When I import the two STL files and set them both to extruder 1, both models fit in the print area.  But when I set the second (much smaller) model to use extruder 2, the gray unprintable area expands and the first model can no longer be printed, even though it uses extruder 1.  The smaller model using extruder 2 is within the extruder 2 print area, so physically the printer is able to print it, but Cura is preventing it.


How can I make Cura understand that the first model can be printed, since it is within that extruder's print area?


I read about nozzle_offsetting_for_disallowed_areas flag, which apparently allows Cura to print within the gray areas, but I couldn't find the Ultimaker 3 definition file.  Could someone point me to an Ultimaker 3 definition file with this flag enabled (or second extruder area limits removed)?


Below is a visualization of the problem:


  • Link to post
    Share on other sites

    Posted (edited) · Using first extruder full print area in two-color print

    Answering my own question:


    The definition file (on Mac Cura 5.0.0) is at /Applications/Ultimaker-Cura.app//Contents/Resources/share/cura/resources/definitions/ultimaker3.def.json.  This file needs to be opened with a text editor and the line "nozzle_offsetting_for_disallowed_areas": false, added to the "metadata" section.  This will allow the second extruder to print to the same area as the first extruder.


    Additionally you need to make sure Print settings --> Build Plate Adhesion --> Build Plate Adhesion Type is "None" (even if you have disabled adhesion in the recommended settings).  By default the disabled value is "Skirt" which still prints a skirt of both colors around the entire print object, which would go outside physically possible range.  Check from the preview that no rim is printed.


    Unfortunately just disabling the build plate adhesion type was not sufficient, the definition file had to be modified also.  😞 

    Edited by plaa
    Markdown not supported by the forum :(
    • Like 1
    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
          • Like
        • 56 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
        • 29 replies
    • Create New...