Jump to content

Slicing problems


bbuild

Recommended Posts

Posted · Slicing problems

Hi, I designed and have made many of these:

http://www.thingiverse.com/thing:108883

unfortunately after upgrading to an UM2 and thus getting round to installing Cura 14, the slicing now fails whereas it was working fine in versions of 13 (at least). Slicing completely misses some internal voids and fills them in (there are supposed to be 10 cubic voids at angles connecting to the five sides of this shape).

Is this controllable somehow, or is it likely to be a bug. I have other shapes that I used to be able to make fine, but now no longer work.

 

  • Link to post
    Share on other sites

    Posted · Slicing problems

    It's fine to have cubic voids, but not double walls. Try robert's suggestion first, then look at the part in "xray" view. Any red areas are a problem. They are generated by passing a 3D line through the model and counting how many polygons it passes through. Even polygons are shades of blue and white. Odd polygons are shades of red. Red indicates an internal wall that doesn't have meaning or a hole in an intended wall.

    If you have no red zones then unchecking all the "fix horrible" boxes should result in a perfect part. The exception is if you have to vertexes very close together (less than maybe .2mm). When Cura slices a layer it interesects a plane with your polygons (which are unordered in an STL file). Then it has a bunch of lines. It tries to figure out which lines intersect and tries to create loops of lines and assigns those together to be a "surface" but sometimes it gets confused if 3 or more vertexes are very close together.

    Also STL files have an indication of the polygons which side is "inside" and which side is "outside". You can tell Cura to ignore that with one of the "fix horrible" settings.

     

  • 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

      • 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
      • Ultimaker Cura 5.6 stable released
        Cura now supports Method series printers!
         
        A year after the merger of Ultimaker and MakerBotQQ, we have unlocked the ability for users of our Method series printers to slice files using UltiMaker Cura. As of this release, users can find profiles for our Method and Method XL printers, as well as material profiles for ABS-R, ABS-CF, and RapidRinse. Meaning it’s now possible to use either Cura or the existing cloud-slicing software CloudPrint when printing with these printers or materials
        • 48 replies
    ×
    ×
    • Create New...