Jump to content

Recommended Posts

Posted · New Ultimaker2 user questions

Hi guys, I received my ultimaker2 yesterday and printed the um robot and coffins cube from sd card supplied.

Went well and I'm sure settings can be adjusted to print them even better. Very happy with the machine

I printed a custom insert for a case which is 180mm long in the x direction and seem to get a strange result on the top surfaces (probably underneath aswell - but not sure). This was printed on the fast print setting

Please see pictures in link below:

https://www.dropbox.com/sh/ry9pvg5mm96ctor/AABBA5MGBQDSJyt0_E3i5Cnfa?dl=0

  • Link to post
    Share on other sites

    Posted · New Ultimaker2 user questions

    The top surface shows 2 issues: underextrusion and play.

    Play: This is trivial to fix. Play (aka backlash) can be caused by loose belts or by too much friction. In either case when one of the servos (can't tell if it's X or Y from the picture) moves to a certain position, the head doesn't quite make it all the way there and stops a bit early. Since you have a new UM2 it's probably not friction but you can turn off power and push the head around and make sure both axes are about the same. More likely you have a loose belt. The long belts have spring tighteners so it's probably not those but check those first - squeeze all 4 long belts and make sure they are all equally tight. Most likely the problem is one of the short belts. To tighten, loosen the for screws that hold the motor in place, then push down on the motor hard with one hand (like maybe 2kg force) while tightening the 4 screws (they are in slots so you can slide the motor up and down a bit). Then feel the tightness of the short belts.

    Underextrusion: Not enough plastic coming out on that top layer. I don't see underextrusion on your side layers. It could be simply you need one more layer - you want at least 3, maybe 4 layers to get a good seal on the top of your part. The first layer comes out a little low and it takes a few layers until it's all at the right height. So top/botttom thickness should be 4X your layer height. If layer height is .1mm then top/bottom should be at least .4. If .2 then .8. Other fixes for underextrusion are printing hotter or slower (you may be approaching the limit of the volume of filament it can squirt through that tiny nozzle hole). Hotter to make the plastic thinner (less viscous - more like honey than toothpaste) slower to lower the pressures and forces involved.

     

  • 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...