Duet3D Logo Duet3D
    • Tags
    • Documentation
    • Order
    • Register
    • Login

    Inconsistent extrusion

    Scheduled Pinned Locked Moved
    Tuning and tweaking
    7
    21
    1.2k
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • Haggan90undefined
      Haggan90 @deckingman
      last edited by

      @deckingman I can't say that I see any fluctations in the temperature, but ofc it can have something to do with the temp. But I think it's such a strange behavior...

      1 Reply Last reply Reply Quote 0
      • Sethipusundefined
        Sethipus
        last edited by

        What sort of printer is that from? The first several lines appear to have the same period, which reminds me of Z-axis leadscrew wobble that I had to deal with on my original cheap cartesian printer, which had leadscrews directly hard-coupled to the stepper motors. Simply swapping out the hard links to those helical spring links made that go away on that printer. Are you seeing this effect on tall towers and whatnot, consistently?

        Haggan90undefined 1 Reply Last reply Reply Quote 0
        • Haggan90undefined
          Haggan90 @Sethipus
          last edited by

          @sethipus Hi, I'm using a self-made printer.
          The printer uses belts for the Z axis, so there's no wobbel on the Z axis at all.
          I would say it's not very consistent at all.

          1 Reply Last reply Reply Quote 0
          • Sethipusundefined
            Sethipus
            last edited by

            Is it possible you're using some cheap filament with fairly strongly varying diameter? Maybe if it varies from, say, 1.70 to 1.76mm or whatever over its length that would make enough of a difference in extruded volume to generate these line thickness differences?

            Haggan90undefined 1 Reply Last reply Reply Quote 0
            • Phaedruxundefined
              Phaedrux Moderator
              last edited by

              Compare the lines to your gcode preview, do they match where the slicer has tried to hide the seam?

              Z-Bot CoreXY Build | Thingiverse Profile

              Haggan90undefined 1 Reply Last reply Reply Quote 0
              • Haggan90undefined
                Haggan90 @Sethipus
                last edited by

                @sethipus Iv'e tried several diffrent brands with same result.

                1 Reply Last reply Reply Quote 0
                • DocTruckerundefined
                  DocTrucker
                  last edited by DocTrucker

                  Looks like sections where the printer has either been slowing down because of a minium layer time feature of the slicer or perhaps the oposite where there is a significant slow down in layer time.

                  Do the bands line up with changes of geometry?

                  Try disabling any minimum layer time slow down features on the slicer and just add more parts to slow it down instead.

                  Running 3 P3Steel with Duet 2. Duet 3 on the shelf looking for a suitable machine. One first generation Duet in a Logo/Turtle style robot!

                  Haggan90undefined 1 Reply Last reply Reply Quote 0
                  • Haggan90undefined
                    Haggan90 @Phaedrux
                    last edited by

                    @phaedrux no not really, same result when printing in vase mode as well.

                    1 Reply Last reply Reply Quote 0
                    • Haggan90undefined
                      Haggan90 @DocTrucker
                      last edited by

                      @doctrucker Hi,

                      I've tried printing in vase mode with consistent speed and still the same deflection in the layer lines.
                      It should be said the the picture is taken in the worst angle possible, if you look at the print straight on you don't see the variations at all.

                      1 Reply Last reply Reply Quote 0
                      • Haggan90undefined
                        Haggan90
                        last edited by

                        Could this has something to do with the fact the I have 50cm ow capricorn bowden tube?

                        JamesMundefined 1 Reply Last reply Reply Quote 0
                        • JamesMundefined
                          JamesM @Haggan90
                          last edited by

                          @haggan90
                          It's quite possible since capricorn tube has tight tolerances and if you don't use high quality filament that itself has tight tolerances it could be binding in the capricorn tube. I tried capricorn tube early on and gave up on it on my Ender 3 and went back to normal white PTFE tubing until I went direct extruder.

                          1 Reply Last reply Reply Quote 0
                          • First post
                            Last post
                          Unless otherwise noted, all forum content is licensed under CC-BY-SA