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    Trying to avoid running levelling before every print

    Duet Hardware and wiring
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    • totalitarian
      totalitarian last edited by

      Hi,

      What would be the best strategy of running mesh levelling only when I think I need it?

      I'd like to save the mesh and reuse it on subsequent prints, only needing to probe Z height each time

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      • dc42
        dc42 administrators last edited by dc42

        It's covered at https://duet3d.dozuki.com/Wiki/Using_mesh_bed_compensation. Let us know if it isn't clear.

        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

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        • totalitarian
          totalitarian last edited by

          Thanks!

          So just to comfirm,

          G28; home
          G29; level and save mesh

          Then in my gcode I can just run
          G28
          G29 S1; recall

          No need to home after the G29 S1?

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

            @totalitarian said in Trying to avoid running levelling before every print:

            Thanks!

            So just to comfirm,

            G28; home
            G29; level and save mesh

            Then in my gcode I can just run
            G28
            G29 S1; recall

            No need to home after the G29 S1?

            That's correct. You can do a single G30 probe at the centre of the bed after the G29 S1 if you want.

            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

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            • totalitarian
              totalitarian last edited by

              Thanks again, what is the advantage of adding in the extra G30?

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

                @totalitarian said in Trying to avoid running levelling before every print:

                Thanks again, what is the advantage of adding in the extra G30?

                If you home Z using the Z probe by doing a G30 at or near bed centre, then probably none. If you home Z using an endstop switch, then you may get a more precise Z=0 height by doing the extra G30.

                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

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                • totalitarian
                  totalitarian last edited by

                  @dc42 said in Trying to avoid running levelling before every print:

                  G28; home

                  I am homing using my probe but use G28 rather than G30.

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

                    @totalitarian G30 would be used in your homeall.g file to probe the Z axis height. G28 calls homeall.g

                    Z-Bot CoreXY Build | Thingiverse Profile

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                    • totalitarian
                      totalitarian @Phaedrux last edited by

                      @phaedrux Good point!

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                      • IOIIOOO
                        IOIIOOO last edited by

                        If I put G29 S1 in my config.g, do I still need to run it before each print as well or will the mesh stay in memory between prints?

                        Phaedrux dc42 2 Replies Last reply Reply Quote 0
                        • Phaedrux
                          Phaedrux Moderator @IOIIOOO last edited by

                          @ioiiooo https://duet3d.dozuki.com/Wiki/Using_mesh_bed_compensation#Section_Using_mesh_bed_compensation_before_printing

                          Z-Bot CoreXY Build | Thingiverse Profile

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                          • dc42
                            dc42 administrators @IOIIOOO last edited by

                            @ioiiooo said in Trying to avoid running levelling before every print:

                            If I put G29 S1 in my config.g, do I still need to run it before each print as well or will the mesh stay in memory between prints?

                            It stays in memory, unless you cancel it with M562 or G29 S2.

                            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

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