Jump to content

Recommended Posts

Posted · extra design in my layers

Hello everyone,

 

This one here has been stumping me and I'm trying to find out why this seems to re-insert an additional line of the cut out mesh a few layers above. It adds a little time to the print and I'm trying to get the print time down. Any and all help is appretiated.

1.png

2.png

3.png

  • Link to post
    Share on other sites

    Posted · extra design in my layers

    I'm putting good money on that being Top/Bottom > Bottom Layers. You could change it relative to Top/Bottom > Initial Bottom Layers (so bottom layers = initial bottom layers - cutout depth) but you shouldn't. It's there to make sure the design is strong,  consistent and smooth.

     

    Something everybody's gotta learn one way or another: if you try and beat the system to print it faster/using less filament, it will cost you more in the end with failed prints (or substandard prints). Pick your idiom. "Slow and steady wins the race" is the first one that comes to mind.

  • Link to post
    Share on other sites

    Posted · extra design in my layers

    That shouldn't happen.  It may be a misplaced layer.  If there is a bad edge or flipped surface within the model (likely within the cutout) you could get something like that.

    Have you tried running the model through a repair program like MS 3D Builder?

     

    If you load the model, set Cura up to slice the way you want, and then use the "File | Save Project" command, you can post the 3mf project file and it will contain the printer, the model, and all your settings.

  • Link to post
    Share on other sites

    Posted (edited) · extra design in my layers
    8 hours ago, GregValiant said:

    That shouldn't happen.  It may be a misplaced layer.  If there is a bad edge or flipped surface within the model (likely within the cutout) you could get something like that.

    I respectfully disagree. Here's my "coin shaped thing with a 0.2mm Slashee cutout™":

    image.thumb.png.80b1d72af4358fb8a8af495d0eec6bbb.png

     

    Let the record show that I am using 0.2mm thickness for all layers, even the bottom:

    image.png.541380714d918766d72397106dad8976.png

    And that the top and bottom consist of four layers:

    image.png.0848fdd29e76fbd0063d1c6fe46c48aa.png

     

    With that out of the way, here's layer 1:

    image.thumb.png.47d684cb0d9a2e29d7983127ebf4f220.png

    It has the Slashee cutout, as expected.

    Layer 2:

    image.thumb.png.ee34f92228039381f41d1135bce01003.png

    All skin, as you would expect. Layer 3:

    image.thumb.png.84da5d8a6ba451127e90c7f7198e3d56.png

    Still nothing but skin. Layer 4, the top of the Initial Bottom Layers:

    image.thumb.png.c5b7ccb44a09e57a98a7de7dab4d64ec.png

    Wouldn't you know it, all skin.

    Layer 5, if you please:

    image.thumb.png.81cc4608d99702b02ebd3d442d6dbca5.png

    There's my Slashee cutout! I knew I left it somewhere. Cue layer 6, for demonstrative purposes:

    image.thumb.png.43ae4ed36f850c72b1d25b378e7eae07.png

    All infill. The Slashee has had its four layers in the spotlight.

     

    Why does this occur? I'll refer back to figure 3:

    image.png.0848fdd29e76fbd0063d1c6fe46c48aa.png

    The print above the Slashee has four bottom layers. The first three are integrated into the initial bottom layers, but that does not provide four layers of skin above the Slashee, so it generates skin for the fourth after the initial bottom layers have ended, because it started a layer later.

    Edited by Slashee_the_Cow
    added layer 6
    • Like 2
    Link to post
    Share on other sites

    Posted · extra design in my layers

    Thanks Slashee.  That's a much better explanation of "Excepted Behavior".

    @Kraven33 do you see it?  There are going to be "bottom layers" equal to your setting over the cutout.  You can adjust the "Skin Expand Distance" to get rid of some of the ins-and-outs so it prints smoother but if you have asked for 4 bottom layers and the cutout is less than 4 layers deep then yes, there are going to be additional "cutout shaped" skin areas to make the bottom count over the cutout = 4.

     

    If the cutout is deeper than "bottom layers" then it looks like the normal situation where the "real" bottom layers on the build plate stop, the cutout continues up, and then the cutout gets capped with 4 bottom layers.

     

    (Could've been a model error though.  I did say "maybe".)

  • 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

      • UltiMaker Cura 5.9 stable released!
        Here comes Cura 5.9 and in this stable release we have lots of material and printer profiles for UltiMaker printers, including the newly released Sketch Sprint. Additionally, scarf seams have been introduced alongside even more print settings and improvements.  Check out the rest of this article to find out the details on all of that and more
          • Like
        • 5 replies
      • Introducing the UltiMaker Factor 4
        We are happy to announce the next evolution in the UltiMaker 3D printer lineup: the UltiMaker Factor 4 industrial-grade 3D printer, designed to take manufacturing to new levels of efficiency and reliability. Factor 4 is an end-to-end 3D printing solution for light industrial applications
          • Heart
          • Thanks
          • Like
        • 7 replies
    ×
    ×
    • Create New...