Jump to content

Print a part with two materials to test adherence


Recommended Posts

Posted · Print a part with two materials to test adherence

I am triyng to test the adherence between Tough PLA and TPU95A. I made two blocks in solidworks and in Ultimaker Cura I put the two blocks joined by one face defining coordinates. In the prepare stage the blocks seem be together but in the preview stage, I can see a little gap between the blocks (Image 1). When I obtained the printed part, the result is not good (Image 2, 3, 4 and 5) because the blocks get separate between them (only the first layer get continue joined) but I do not know if the cause is the configuration in ultimaker cura or do not exist good adherence between the materials.

Do you know which can be the reason? Is there another way to configure the geometry and have a half with Tough PLA and the other half with TPU95A?


Thank you!






  • Link to post
    Share on other sites

    Posted · Print a part with two materials to test adherence

    If the models are positioned exactly wall-to-wall, and if your machine is calibrated correctly, then the parts should remain separate.  Both outside surfaces end exactly at a plane and there should be no cross-over from one side of that plane to the other.  Maybe you could try using "Outer Wall Inset" (set to a negative number) or "Horizontal Expansion" (as a positive number).  It is likely that the end size of the model would be effected.

    If there is some overlap between the models then there will be "double extrusion" in the overlap volume as both nozzle will want to extrude within the overlap volume.

    Looking at the preview it appears that you have some Per Model settings that are different from one block to the other.

    If the two blocks were to fit together (small mortise joints or something) then they would have a better chance of adhering.



  • 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 5.4 stable released
        The full stable release of UltiMaker Cura 5.4 is here and it makes it easier than ever to remove brims and supports from your finished prints. UltiMaker S series users can also look forward to print profiles for our newest UltiMaker PET CF composite material!
          • Like
        • 58 replies
    • Create New...