Jump to content

Recommended Posts

Posted · Problems with support material

I currently have problems with support material in a UM3 and Cura 4.6.0

1. UM PVA

I had used this material in the past and it worked well with the standard settings (NFC).

But in the last prints there is almost no flow and prints look like this:

UM3_PVA_problem.thumb.jpg.f70d604fabba89a2c852957ff2e44782.jpg

When loading the PVA it is flowing out of the BB 0.4 and even a brim is printed , but not entirely.
Printing temperatur is 215°C. Standby temerature in the material setting 175 °C, but 100 °C in the printing profile (?).
The PVA has become mostly white after printing.

The PVA is now 15 months old, most time store in a vaccum bag and dried before storing.
Could it be an aging problem?

 

2. Formfutura Atlas
I started using it, raising printing temperature to 220 °C. The prints were satisfactory, but now, I have smilar problems. There is also a problem feeding the filament through the Bowden tube: It looks like there is too much friction of the rougher Atlas . Even when pushing by hand it is almost impossible now to move it through the tube.
May be the inner diameter of the tube being too small ? The diameter of the was Atlas in tolerance. The roughness of the filament is higher compared to the UM PVA.
Loading the Atlas works with some flow. There is always some material below the feeder.

 

The nozzle has been cleaned.

 

Thanks for any suggestions !

  • Link to post
    Share on other sites

    Posted · Problems with support material
    On 4/30/2020 at 7:08 PM, stoccarda said:

     

    The PVA is now 15 months old, most time store in a vaccum bag and dried before storing.
    Could it be an aging problem?

     

     

     

    I think that is quite likely. 15 months is pretty old. Is it brittle when you try to bend it?

     

    On 4/30/2020 at 7:08 PM, stoccarda said:

    2. Formfutura Atlas

     

    On 4/30/2020 at 7:08 PM, stoccarda said:

    May be the inner diameter of the tube being too small ?

    I am not familiar with this material, but if this would be the case I think it would be more accurate to say the filament would be too thick. 

     

    Besides keeping filament in a vaccuum bag, do you also keep silica bags in the same bag? 

  • Link to post
    Share on other sites

    Posted · Problems with support material

    The part of the PVA which has passed the feeder was brittle, but the filament before was not brittle.

     

    The Atlas has a diameter of 2.86 mm, PVA 2.88 mm.

    I see the main diference that the PVA has a smoother (less rough) surface, especially after running through the feeder

     

    I am using a unit  with a vaccum pump and hot sealing, as you use it before deep-freezing food.
    Hence I did not use silica bags, or do have I?

  • 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

      • Help Us Improve Cura – Join the Ultimaker Research Program
        🚀 Help Shape the Future of Cura and Digital Factory – Join Our Power User Research Program!
        We’re looking for active users of Cura and Digital Factory — across professional and educational use cases — to help us improve the next generation of our tools.
        Our Power User Research Program kicks off with a quick 15-minute interview to learn about your setup and workflows. If selected, you’ll be invited into a small group of users who get early access to features and help us shape the future of 3D printing software.

        🧪 What to Expect:
        A short 15-minute kickoff interview to help us get to know you If selected, bi-monthly research sessions (15–30 minutes) where we’ll test features, review workflows, or gather feedback Occasional invites to try out early prototypes or vote on upcoming improvements
        🎁 What You’ll Get:
         
        Selected participants receive a free 1-year Studio or Classroom license Early access to new features and tools A direct voice in what we build next
        👉 Interested? Please fill out this quick form
        Your feedback helps us make Cura Cloud more powerful, more intuitive, and more aligned with how you actually print and manage your workflow.
        Thanks for being part of the community,

        — The Ultimaker Software Team
        • 0 replies
      • Cura 5.10 stable released!
        The full stable release of Cura 5.10 has arrived, and it brings support for the new Ultimaker S8, as well as new materials and profiles for previously supported UltiMaker printers. Additionally, you can now control your models in Cura using a 3D SpaceMouse and more!
          • Like
        • 18 replies
    ×
    ×
    • Create New...