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

Mesh Level - Alternating Height Map

Scheduled Pinned Locked Moved
Tuning and tweaking
2
7
1.4k
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.
  • undefined
    Firebug24k
    last edited by 12 Mar 2017, 09:00

    Hello,

    I'm having a really hard time getting the mesh leveling to do something reasonable on my printer. I get a very odd alternating high/low pattern in the Y axis as it probes. Here's the picture:

    And my heightmap file:

    Any thoughts on what might be causing this odd behavior?

    1 Reply Last reply Reply Quote 0
    • undefined
      dc42 administrators
      last edited by 12 Mar 2017, 10:04

      What type of Z probe are you using?

      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
      • undefined
        Firebug24k
        last edited by 12 Mar 2017, 18:17

        It's one of your mini IR sensor boards. The probe works well for autoleveling - haven't had any issues there. Also, the three peaks in the graph really are there (there's three bumps in the surface of the print bed). But the alternating portion in that are isn't real, at least as far as I can feel and see.

        1 Reply Last reply Reply Quote 0
        • undefined
          dc42 administrators
          last edited by 12 Mar 2017, 21:53

          Very strange. Do you get the same pattern if you change the grid spacing? What is the bed surface, and if it is transparent, what is underneath it?

          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
          • undefined
            Firebug24k
            last edited by 12 Mar 2017, 22:52

            It's aluminum plate with black spraypainted PEI glued on top with the 3M tape. Let me run it again with 20mm spacing and see what happens…

            1 Reply Last reply Reply Quote 0
            • undefined
              Firebug24k
              last edited by 12 Mar 2017, 23:01

              Yep, still doing it. Peak valley peak valley, alternates every other sample, even with 20mm spacing.

              Rerunning that corner now: M557
              Grid: X-150.0:0.0, Y-150.0:0.0, radius 150.0, spacing 10.0, 256 points

              And exactly the same thing. High along rows of X, then low along a row of X, then high, etc.

              Is it possible there's something mechanically causing it to be low when it's moving one way and high when it's moving the other? That's the only thing I can think of.

              By the way, here's what a large square looks like (first layer) WITHOUT mesh leveling - prints pretty good, I'm just trying to get rid of the lumps. Definitely no peak/valley surface.

              1 Reply Last reply Reply Quote 0
              • undefined
                dc42 administrators
                last edited by 13 Mar 2017, 07:00

                Perhaps a loose X or Y pulley?

                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
                3 out of 7
                • First post
                  3/7
                  Last post
                Unless otherwise noted, all forum content is licensed under CC-BY-SA