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    1.18 RC1 Bed levelling

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    • pcsentinelundefined
      pcsentinel
      last edited by

      Hi DC42 can you expand on the line in the release notes that says:

      M557 P parameter to set probing points is no longer supported. Use a bed.g file instead

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      • dc42undefined
        dc42 administrators
        last edited by

        It used to be possible to do 3, 4 or 5 point bed probing without using a bed.g file, by defining the probe points in M557 commands. This was replaced by the use of a bed.g file 2 or 3 years ago; but if there was no bed.g file then the old way was still supported.

        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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        • pcsentinelundefined
          pcsentinel
          last edited by

          Ok thanks, if I may ask a further maybe stupid question, I have been using 4 point as per many previous posts, but have discovered that the bed coating I use severely affects the IR Probe trigger height, is there a way to save probing results from 4 point as there is with Mesh levelling?

          Also I think the Web interface may have an issue, if I click on the down arrow for auto bed compensation and select Mesh level nothing happens, if I gcode it it runs fine.

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          • dc42undefined
            dc42 administrators
            last edited by

            The web interface issue is known and fixed in the release that chrishamm has under development.

            There isn't a way of saving the results of 4-point probing, but you can use 4-point mesh levelling instead.

            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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            • pcsentinelundefined
              pcsentinel
              last edited by

              Thanks again, I'll give it a try.

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              • pcsentinelundefined
                pcsentinel
                last edited by

                Hi DC42, struggling with four point mesh, I cant seem to figure out what to put in the M557 command to get it to go to the corners of the bed. I have a 28X 28Y offset to the probe and a 200x200 bed

                If I try
                M557 X0:160 Y0:160 S159 it tries then comes back with not enough points error

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                • dc42undefined
                  dc42 administrators
                  last edited by

                  If the probe offset is +28X and +28Y then the point 0,0 is not accessible to the probe unless the nozzle can move to -28X -28Y. So try probing from about 30 to 190 instead of 0 to 160.

                  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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                  • pcsentinelundefined
                    pcsentinel
                    last edited by

                    Sorted, thanks for your help, settled on
                    M557 X40:190 Y20:170 S150

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                    • Russ Griesundefined
                      Russ Gries
                      last edited by

                      Question,

                      I was trying to set the bed mesh manually, i changed the points in the CSV. then saved it, then i set a M375.

                      but from what i could tell nothing changed.

                      I'm i doing this correctly? or is there another step?

                      Thanks!

                      ~Russ

                      One Day At A Time…
                      My Main Research Page:
                      http://rwgresearch.com/open-projects/3d-printing-research/

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                      • dc42undefined
                        dc42 administrators
                        last edited by

                        @Russ:

                        Question,

                        I was trying to set the bed mesh manually, i changed the points in the CSV. then saved it, then i set a M375.

                        but from what i could tell nothing changed.

                        I'm i doing this correctly? or is there another step?

                        Thanks!

                        ~Russ

                        That should work, but use the 1.18 release of at least 1.18RC2. There was a bug in earlier versions when loading large height maps files.

                        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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                        • Russ Griesundefined
                          Russ Gries
                          last edited by

                          ok, Ii will give it a go when I have troubles again, Thanks!

                          ~Russ

                          One Day At A Time…
                          My Main Research Page:
                          http://rwgresearch.com/open-projects/3d-printing-research/

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                          • pcsentinelundefined
                            pcsentinel
                            last edited by

                            Hi DC42, just found an oddity, for a laugh I did mesh levelling with:
                            M557 X52:204 Y20:170 S12.5

                            I then printed 4 x 10mm square 1mm high at the edges of the plate, each of the squares had each layer in the Y direction slipped by about 0.2mm

                            Odd?

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                            • dc42undefined
                              dc42 administrators
                              last edited by

                              @pcsentinel:

                              Hi DC42, just found an oddity, for a laugh I did mesh levelling with:
                              M557 X52:204 Y20:170 S12.5

                              I then printed 4 x 10mm square 1mm high at the edges of the plate, each of the squares had each layer in the Y direction slipped by about 0.2mm

                              Odd?

                              Is it reproducible? If so, feel free to remind me about this about a week from now, when I should have time to look into 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

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