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

    First layer tuning

    Scheduled Pinned Locked Moved
    Tuning and tweaking
    5
    13
    1.3k
    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.
    • Vetiundefined
      Veti
      last edited by

      adjust the z offset until first layer is ok.

      you also might try increasing the probe point for the mesh bed levelling.

      1 Reply Last reply Reply Quote 0
      • kmhudginsundefined
        kmhudgins
        last edited by

        Ok ill give that a try. If i have my information correct i need to adjust z offset down correct? and as for the probing i currently have it set at 47 points. However, i currently do not have that set to run every print i was planning on running once every couple of days. should i run it every print?

        Vetiundefined 1 Reply Last reply Reply Quote 0
        • peter247undefined
          peter247
          last edited by

          if I remember correct !!
          You drop the nozzle down until it touches the bed (bed centre) and zero it out with G92 Z0.
          Move the nozzle up again 10mm G1 Z10
          and probe with G31 S-1 ? and it should tell you want the bltouch off set should be.

          Ender 5 plus linear rail and hemera powered by duet 2 wifi , CR10s pro v1 with bltouch mostly stock , BLV mgn Cube slowly being built powered by duet 3 mini 5+

          1 Reply Last reply Reply Quote 0
          • kmhudginsundefined
            kmhudgins
            last edited by

            yes i have done the z offset and when i am at z0 it is a paper width from the bed but when i print it is printing in air.

            1 Reply Last reply Reply Quote 0
            • Vetiundefined
              Veti @kmhudgins
              last edited by

              @kmhudgins said in First layer tuning:

              s. However, i currently do not have that set to run every print i was planning on running once every couple of days. should i run it every print?

              are you sure that you are loading the heightmap after the homing?

              kmhudginsundefined 1 Reply Last reply Reply Quote 0
              • zaptaundefined
                zapta
                last edited by

                Do you have in your config.g a command like this?

                G31 P500 X20.5 Y12.9 Z1.300

                If so, if your optimal baby step was -0.26mm, subtract it from the Z value and update the command. For example, with the command above, adjusting to -0.26mm babystep will result in

                G31 P500 X20.5 Y12.9 Z1.560

                (1.30 - -0.26) = 1.56

                Then power cycle the printer and print. The optimal babysteps now should be 0.

                BTW, the first layer in the picture doesn't look good. Is this with the -0.26 babysteps? Can you find a better babysteps value? Are your esteps calibrated and your hoeend clean and flows well?

                kmhudginsundefined 1 Reply Last reply Reply Quote 0
                • kmhudginsundefined
                  kmhudgins @Veti
                  last edited by

                  @veti i think so i have the G21 S1 commend in the bed.g to load height map form file. is there a way to verify that this is working correctly?

                  Vetiundefined 1 Reply Last reply Reply Quote 0
                  • kmhudginsundefined
                    kmhudgins @zapta
                    last edited by

                    @zapta yes i do need to do further testing that was just my first run sense getting the bltouch and setting up the mesh compensation. I will try changing the offset when i get a chance tomorrow. thank you for everyones input.

                    1 Reply Last reply Reply Quote 0
                    • Vetiundefined
                      Veti @kmhudgins
                      last edited by

                      @kmhudgins said in First layer tuning:

                      i think so i have the G21 S1 commend in the bed.g to load height map form file. is there a way to verify that this is working correctly?

                      The command is G29 S1
                      Running M122 while printing will tell you if the mesh is being applied

                      kmhudginsundefined 1 Reply Last reply Reply Quote 0
                      • Nightreaverundefined
                        Nightreaver
                        last edited by Nightreaver

                        Hey! So i've been having similar issue recently but i think i'm making progress now. So when you calculate/measure the z offset, don't use paper!
                        there is a document on the duet wiki https://duet3d.dozuki.com/Wiki/Test_and_calibrate_the_Z_probe

                        They say: move the nozzle until its touching the bed and i assume they mean it and that's what I do. Then follow the calibration steps on the wiki. don't use paper and move the nozzle downuntil the gap (should look like no gap at all) is closed. then measure the distance and take it over into your z offset.

                        one more thing is... don't use the corner or your bed for homing z. I moved from the corner to home in the middle of my bed and it works much better with calibration.

                        Since then i really have a nice first layer!

                        1 Reply Last reply Reply Quote 2
                        • zaptaundefined
                          zapta
                          last edited by

                          @nightreaver said in First layer tuning:

                          Since then i really have a nice first layer!

                          Have you tried the first layer challenge?

                          https://www.thingiverse.com/thing:2741800

                          1 Reply Last reply Reply Quote 1
                          • kmhudginsundefined
                            kmhudgins @Veti
                            last edited by

                            @veti typo It is set at G29 S1. ill check this this after noon thank you

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