Jump to content

Infill and Top/Bottom when slicing dual extrusion print


Recommended Posts

Posted · Infill and Top/Bottom when slicing dual extrusion print

Doing quite the interesting print right now. A round shell with a translucent part and a black part. It needs a certain thickness  but shouldn't be 100% infill or I assume it won't be transparent enough. So I sliced with triple layer outer perimeter (default I believe) and no infill. Yet on the bottom and top of the top parts it still shows infill as that is part of the top/bottom of the tiny part. Black part can be 100% infill.


So I want to get rid of the yellow bottom/top infill of the middle parts but I don't want the full piece to have no top/bottom infill or it will be open. How would I fix this?

  • Link to post
    Share on other sites

    Posted · Infill and Top/Bottom when slicing dual extrusion print

    You are going to have to fool Cura.  How you do it can be tricky.


    The slices Cura creates are horizontal (parallel to the build plate).  Since that rib (or whatever) is only "near horizontal" the wall thickness is being compensated for.  It's a trig function of the angle to the build plate.

    This is a 6 x 6 x 75 rectangular solid tipped up 10° with 1.2mm wall thickness (3 walls / loops).



    Here is the math.  The top view is at 10° tip and the bottom view is at a 5° tip from horizontal.  The infill is generated to maintain the 1.2mm wall thickness "normal" to the outer surfaces of the model.




    • 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

      • 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
          • Like
        • 2 replies
      • UltiMaker Cura 5.7 stable released
        Cura 5.7 is here and it brings a handy new workflow improvement when using Thingiverse and Cura together, as well as additional capabilities for Method series printers, and a powerful way of sharing print settings using new printer-agnostic project files! Read on to find out about all of these improvements and more. 
          • Like
        • 26 replies
    • Create New...