Jump to content

How to improve strength


spooner777

Recommended Posts

Posted · How to improve strength

I am trying to print a camera stabilisation device for the gopro cameras. It is my own design so I can change it but there is not much I can do about the connector itself.

gopro-tripodadapter-gp2014_l.jpg

The layers on those 3 pins always separate when there is a force. Is there anyway I can make the bond stronger? It won´t brake in the direction of the fiber but only between layers.

I am printing on Cura with the default High quality settings and the results look good.

Another thing I would like to ask is, how can I reduce the amount of ooze?

  • Link to post
    Share on other sites

    Posted · How to improve strength
    I am trying to print a camera stabilisation device for the gopro cameras. It is my own design so I can change it but there is not much I can do about the connector itself.

    gopro-tripodadapter-gp2014_l.jpg

    The layers on those 3 pins always separate when there is a force. Is there anyway I can make the bond stronger? It won´t brake in the direction of the fiber but only between layers.

    I am printing on Cura with the default High quality settings and the results look good.

    Another thing I would like to ask is, how can I reduce the amount of ooze?

    change direction you are printing, in other words, turn the object by 90 deg. the bonds between the layers are usually the weakest points (especially if you print ABS too cold).

    you can reduce the mount of ooze (stringing) by lowering the temp (for PLA), and increase the print speed a bit, and increase the retraction distance/speed in your slicer.

  • Link to post
    Share on other sites

    Posted · How to improve strength

    The problem is that If I turn it by 90° then it just splits the other way arround. And I cant print the pins flat without support.

    Thought there would be some kind of trick to bond the layers together better.

  • Link to post
    Share on other sites

    Posted · How to improve strength
    The problem is that If I turn it by 90° then it just splits the other way arround. And I cant print the pins flat without support.

    Thought there would be some kind of trick to bond the layers together better.

    well, this is where creative printing comes into play...

    I don't see that part splitting when printed the other way... did you do some tests and it split?

    are you printing ABS? or PLA?

    to get better adherence, print ABS 5-10C hotter, makes better layer adherence. I print mine at 250C, and I have zero delamination problems right now, even on smaller parts.

    I can't say much about PLA... I never saw much delamination issues with PLA at any temperature, but I gave up on PLA.

  • Link to post
    Share on other sites

    Posted · How to improve strength

    for PLA,

    it's weak when pulled on the z-axis, strong when pushed on the z-axis

    de-lamination in x and y occur due to insufficient surface contact across the size of the print.

    strongest way to print the part in the photo there would be to rely mostly on the infill for strength - use a couple of perimeters and a circular infill.

    nik

  • Link to post
    Share on other sites

    Posted · How to improve strength

    In my experience (albeit not as extensive as some of the guys here) adding a few extra perimeters makes a huge impact on strength on some parts. I once did a test where I printed a cylinder with a dome on top with extra perimeters that made the wall maybe 2-2.5mm thick with a normal infill, I then put it in a vice and started cranking down on it. It took a surprising amount of force before it cracked, it did deform a bit before cracking of course but it was pretty damn strong.

  • Link to post
    Share on other sites

    Posted · How to improve strength

    The thing is that one the high quality cura settings it prints with completeley filled layers. There are no voids in the shape it seems as if everything is filled well by the material. But I still cant get it ver strong. I also have another small part that breaks all the time. Even though it would be more than strong enough if it was injection molded. Is ABS stronger?

  • Link to post
    Share on other sites

    Posted · How to improve strength

    Have you tried printing which a higher temperature? This fuses the layers together better. I would start off with 230C but you could go all the way to 250C. Also don't print too fast.

  • Link to post
    Share on other sites

    Posted · How to improve strength

    Thanks, Ill try that! I printed at 230C° already. And also did one print at 400% which looked perfect.

  • Link to post
    Share on other sites

    Posted · How to improve strength

    How did it go?

    Did you try higher temps and/or lower speeds and did you get a stronger part?

    Daniel

  • Link to post
    Share on other sites

    Posted · How to improve strength
    How did it go?

    Did you try higher temps and/or lower speeds and did you get a stronger part?

    Daniel

    While I didn't need strength, we made a water tight connector last Tuesday. It took us 4 tries. The best settings in Cura where:

    240C, 0.1mm layers, 0.4mm walls, 100% infill, 1.5mm retraction, 40mm/s, filament diameter of 2.7mm

    With 4.5mm retraction we had tiny holes in the result, we did get strings with 1.5mm retraction, but better some strings then losing water.

  • Link to post
    Share on other sites

    Posted · How to improve strength

    COngrats to Daid for the Job by the way!

  • 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 Universal Cura Projects in the UltiMaker Cura 5.7 beta
        Strap in for the first Cura release of 2024! This 5.7 beta release brings new material profiles as well as cloud printing for Method series printers, and introduces a powerful new way of sharing print settings using printer-agnostic project files! Also, if you want to download the cute dinosaur card holder featured below, it was specially designed for this release and can be found on Thingiverse! 
          • Like
        • 10 replies
      • S-Line Firmware 8.3.0 was released Nov. 20th on the "Latest" firmware branch.
        (Sorry, was out of office when this released)

        This update is for...
        All UltiMaker S series  
        New features
         
        Temperature status. During print preparation, the temperatures of the print cores and build plate will be shown on the display. This gives a better indication of the progress and remaining wait time. Save log files in paused state. It is now possible to save the printer's log files to USB if the currently active print job is paused. Previously, the Dump logs to USB option was only enabled if the printer was in idle state. Confirm print removal via Digital Factory. If the printer is connected to the Digital Factory, it is now possible to confirm the removal of a previous print job via the Digital Factory interface. This is useful in situations where the build plate is clear, but the operator forgot to select Confirm removal on the printer’s display. Visit this page for more information about this feature.
          • Like
        • 0 replies
    ×
    ×
    • Create New...