Jump to content
Ultimaker Community of 3D Printing Experts

Small "z-banding" and over-extruded first layer


Recommended Posts

Posted · Small "z-banding" and over-extruded first layer

I printed some of these parts and noticed that there are very small layer variations on the surface.

To be honest this is whining on a pretty high level, the variations can barely be felt but are visible in certain light conditions, but I'm curious.

 

IMG_1777.thumb.jpeg.14fde03fdedcfcd4ad5d898dac3472b3.jpeg

The parts are printed on an S5 with the "Visual Fine - 0.1mm" preset with Ultimaker PLA White.

 

Where do these variations come from? Variations in the filament-diameter?

 

I noticed another thing, the first layer is always over-extruded, resulting in a slightly too large first layer and visibly overlapping lines on the bottom. If I remember it on time I compensate that by setting the flow of the first layer to 90%, then everything is fine. Is the first layer over-extruded on purpose or is that some inaccuracy of the active leveling? That happens regardless of the material or profiles. I already had that same thing on my UM3, so I'm somehow used to it. The engineering profiles somehow seems to compensate that by setting the initial layer horizontal expansion to -0.2mm.

 

IMG_1778.thumb.jpeg.d8c576e04463140fec0512de76e2eba2.jpeg

  • 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
     Share

    • Our picks

      • Ultimaker showcase | April 2022 | 4pm CEST | 10am EDT
        I'm excited because I've personally produced this showcase event, so if you are curious what else I'm up to nowadays, come check it out and say hi in the chat! It would mean a lot! 
          • Thanks
          • Like
        • 4 replies
      • New here? Get ahead with a free onboarding course
        Hi,
         
        Often getting started is the most difficult part of any process. A good start sets you up for success and saves you time and energy that could be spent elsewhere. That is why we have a onboarding course ready for
        Ultimaker S5 Pro Bundle, Ultimaker S5, Ultimaker S3 Ultimaker 2+ Connect.   
        They're ready for you on the Ultimaker Academy platform. All you need to do to gain access is to register your product to gain free access. 
        Ready? Register your product here in just 60 seconds.
          • Like
        • 11 replies
    ×
    ×
    • Create New...