Navigation

    Duet3D Logo

    Duet3D

    • Register
    • Login
    • Search
    • Categories
    • Tags
    • Documentation
    • Order

    Help please to understand these waves on my prints

    General Discussion
    4
    10
    831
    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.
    • briskspirit
      briskspirit last edited by briskspirit

      Hello everyone.

      I have strange waves when printing wall calibration cube and other straight walls. They are on X and Y axis and I can't understand where are they from.

      I think this is not from Z wobble but more like extruder pulsations? (Printing speed 10mm/s, PLA and PETG, no infill!)

      1_1537308840463_IMG_1588.jpg 0_1537308840463_IMG_1585.jpg

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

        Can you post your config.g?

        What microstepping are you using?

        What kind of extruder is it? Are the gears clean?

        Does it look like it's pausing or anything while printing? Does it sound different?

        Does it persist if you print faster?

        Z-Bot CoreXY Build | Thingiverse Profile

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

          @phaedrux Sorry , forgot to mention that I am not yet switched to Duet (waiting for Maestro) and right now I am on Chitu3D v4.2 with closed source firmware, extruder is direct drive Mk10. Same is happening from both extruders and what you see at photos is with Extruder Multiplier set to 100%, now I set 91% as per my measurements and getting even more same waves(less pitch). Extruders are calibrated with right steps per mm. Gears are clean(this is my first print from the left extruder with PETG, same is on my right with PLA). And there is no grinding or skipping steps noise.

          I am not sure about if it persists when I print faster but as I remember - no(will try)

          So as extruder is new, calibrated and etc - seems like firmware/stepper fault?

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

            @briskspirit said in Help please to understand these waves on my prints:

            Chitu3D

            In that case I'm not sure what to try.

            Z-Bot CoreXY Build | Thingiverse Profile

            briskspirit 1 Reply Last reply Reply Quote 1
            • briskspirit
              briskspirit @Phaedrux last edited by

              @phaedrux Thank you anyway! Very soon I will be in your club 😉

              1 Reply Last reply Reply Quote 0
              • RCarlyle
                RCarlyle @briskspirit last edited by

                @briskspirit to check for extruder issues, scale the box up or down by 5% and reprint to see if the angle of the lines changes. Or print a Benchy or something that won’t show a pattern at all if the issue is extruder flow.

                briskspirit 1 Reply Last reply Reply Quote 0
                • briskspirit
                  briskspirit @RCarlyle last edited by

                  @rcarlyle On Benchy I don't see any pattern but surface is not ideal.

                  1 Reply Last reply Reply Quote 0
                  • dc42
                    dc42 administrators last edited by

                    If you turn down the extrusion factor by 10% in DWC, does the horizontal spacing of the pattern increase by a factor of 10/9 ?

                    Duet WiFi hardware designer and firmware engineer
                    Please do not ask me for Duet support via PM or email, use the forum
                    http://www.escher3d.com, https://miscsolutions.wordpress.com

                    briskspirit 1 Reply Last reply Reply Quote 0
                    • briskspirit
                      briskspirit @dc42 last edited by

                      @dc42 I have changed extrusion multiplier from 100% to 91% and now I see more waves(pitch is smaller between these waves). So as I've understood your question - no, spacing of the pattern is decreased.

                      dc42 1 Reply Last reply Reply Quote 0
                      • dc42
                        dc42 administrators @briskspirit last edited by

                        @briskspirit, that's odd. Is it the exact same GCode file? I think it's an extruder problem; but if it happens once every X mm of filament consumed, then reducing the extrusion rate should have increased the wavelength.

                        Duet WiFi hardware designer and firmware engineer
                        Please do not ask me for Duet support via PM or email, use the forum
                        http://www.escher3d.com, https://miscsolutions.wordpress.com

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