Jump to content
Ultimaker Community of 3D Printing Experts

Issue with printing tensile bars vertically


Recommended Posts

Posted · Issue with printing tensile bars vertically

Hello, as part of my thesis, I have to print tensile test samples in vertical and horizontal direction. The vertical ones turn out fine but I am having an issue with the horizontal ones. As you can see in the pictures below, when it gets to the small overhang at the upper mid part, I get some sort of warping and layer displacement. So far I have tried:

-Increasing brim adhesion lines

-Lowering the printing speed from 30 to 10 mm/s

-Lowering the printing temp from 210 to 202 degrees celsius

-Printing with support

Even though the first two helped a little, I still get the warping. Do you have any other suggestions? Any help would be greatly appreciated. I have also attached my STL file.


58e57fd7-6602-46d8-97f7-b6808fdf9423.thumb.jpg.2641764e8df031130fa6f7b6f5efaaf9.jpg4db67ead-edf1-4736-8026-7e60ae435c6d.thumb.jpg.6fa99f0236c85f283275ea75cf2f4486.jpgTensile specimen D638 type IV.STL

  • Link to post
    Share on other sites

    Posted · Issue with printing tensile bars vertically

    Print slower.  MUCH slower.  Try 1/2 or 1/4 speed what you are printing now.  You can also lower the acceleration and jerk by 2X.


    In cad, add some support.  the part is stronger where it is wider and it should be okay to add some support there.  Make the support get very tiny where it attaches to the main part - maybe 1mm attachment.  Make the attachment be like an angled post that angles in and helps prevent your part from wobbling when it gets taller.


    Also you can print much slower.  i'm guessing you have a printer where the bed moves in the Y direction.  This moves the part and so it wobbles more - align your part so it lines up such that it is stronger in the Y direction if this is the case.


    All supports should be at least 1/5th as wide at the base as tall.  So they should actually be cone shaped ideally.


  • 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

      • New here? Get ahead with a free onboarding course
        Often getting started is the most difficult part of any process. A good start sets you up for success and saves you time and energy that could be spent elsewhere. That is why we have a onboarding course ready for
        Ultimaker S5 Pro Bundle, Ultimaker S5, Ultimaker S3 Ultimaker 2+ Connect.   
        They're ready for you on the Ultimaker Academy platform. All you need to do to gain access is to register your product to gain free access. 
        Ready? Register your product here in just 60 seconds.
          • Like
        • 11 replies
    • Create New...