Jump to content

Extruder Nozzle Scraping Previous layer..Is this normal??


mfknjohn

Recommended Posts

Posted · Extruder Nozzle Scraping Previous layer..Is this normal??

I have been printing about a month now on my Ultimaker 2 Extended, I had a rough start but am currently happy with my settings. After printing a few Prototype parts everything comes out well, although after switching to my Green UPET (CPE) filament from ultimaker I see little scrapes in the previous layer printed where the nozzle went over the layer? Is this normal or am i TOO close to the bed? It doesnt really affect the part or the outside but I was just curious.

IMG_20150611_072220.thumb.jpg.a32156349deb5a8cea0debf74c857e8f.jpg

IMG_20150611_072220.thumb.jpg.a32156349deb5a8cea0debf74c857e8f.jpg

  • Link to post
    Share on other sites

    Posted (edited) · Extruder Nozzle Scraping Previous layer..Is this normal??

    It's normal to have some scraping if the layer height is low. It's usually a good thing, actually. The second time the nozzle goes over the material, it smoothes out the layer a bit more, just by pushing hot filament on top of it.

    From what I can see in your picture, it is probably scraping too much though. Too much scraping is bad though since it will result in an uneven outer surface (as well as the inside). If you see that the wire is flattened such that it becomes wider, you should probably adjust the bed a bit lower. During the bed levelling, make sure that you can put a normal 80g-weight paper between the bed and the nozzle, and that you can feel just a little friction with the nozzle when moving the paper underneath.

    Edited by Guest
  • 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 5.8 beta released
        Another Cura release has arrived and in this 5.8 beta release, the focus is on improving Z seams, as well as completing support for the full Method series of printers by introducing a profile for the UltiMaker Method.
          • Like
        • 1 reply
      • 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
          • Thanks
          • Like
        • 3 replies
    ×
    ×
    • Create New...