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    Layer height runs

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    • Steffenundefined
      Steffen
      last edited by

      https://vimeo.com/329770517

      Why does it do it

      wilrikerundefined 1 Reply Last reply Reply Quote 0
      • wilrikerundefined
        wilriker @Steffen
        last edited by

        @steffen We need the GCode file that causes this behavior to say for sure.
        But first shot in the dark that comes to my mind is: are you using variable layer height? Also which slicer are you using (but that would be answered by the GCode most probably)?

        Manuel
        Duet 3 6HC (v0.6) with RPi 4B on a custom Cartesian
        with probably always latest firmware/DWC (incl. betas or self-compiled)
        My Tool Collection

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        • Steffenundefined
          Steffen
          last edited by

          layer 0,200
          Simplify3D-4.1.2
          It has just come by itself
          A print of about 5 min
          It's on every print it does

          wilrikerundefined 1 Reply Last reply Reply Quote 0
          • wilrikerundefined
            wilriker @Steffen
            last edited by

            @steffen I know that S3D creates some weird GCodes that makes it sometimes hard for RRF to figure out which layer it actually is right now.
            Again, uploading the GCode file (or any GCode file where this happens) would be helpful.

            Manuel
            Duet 3 6HC (v0.6) with RPi 4B on a custom Cartesian
            with probably always latest firmware/DWC (incl. betas or self-compiled)
            My Tool Collection

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            • Steffenundefined
              Steffen
              last edited by

              0_1554986915742_Afstand stykke 7mm 1Stk.gcode

              wilrikerundefined 1 Reply Last reply Reply Quote 0
              • wilrikerundefined
                wilriker @Steffen
                last edited by wilriker

                @steffen At least there is nothing obviously strange with that GCode at first sight. You have a Z-hop of 0.4mm and it starts at 0.172mm for the first layer and increments in 0.2mm steps from there.

                Also relevant: Firmware and DWC versions.

                Maybe @dc42 has any idea on this one?

                EDIT: I checked the file again. The following command confuses the FileInfoParser:

                G1 Z-275 F40 S1; Move slowly to Z axis endstop once more (second pass)
                

                can you maybe move your start codes into a macro file and just call M98 Pstart_macro.g?

                I commented out this line and now the estimation works as expected.

                Manuel
                Duet 3 6HC (v0.6) with RPi 4B on a custom Cartesian
                with probably always latest firmware/DWC (incl. betas or self-compiled)
                My Tool Collection

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                • Phaedruxundefined
                  Phaedrux Moderator
                  last edited by

                  G1 Z5 F1800
                  G90
                  G1 Z-275 F40 S1; Move slowly to Z axis endstop once more (second pass)
                  G1 X0 Y5 Z0.2 F3000 ; get ready to prime
                  

                  Any and all of those Z moves will confuse it.

                  Z-Bot CoreXY Build | Thingiverse Profile

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

                    @phaedrux said in Layer height runs:

                    G1 Z5 F1800
                    G90
                    G1 Z-275 F40 S1; Move slowly to Z axis endstop once more (second pass)
                    G1 X0 Y5 Z0.2 F3000 ; get ready to prime
                    

                    Any and all of those Z moves will confuse it.

                    Actually, the first one will be ignored because it is in relative movement mode. But you are right about the last one (which I did miss because it coincidentally is close enough to the real first layer's Z height so that there is no real confusion).

                    Manuel
                    Duet 3 6HC (v0.6) with RPi 4B on a custom Cartesian
                    with probably always latest firmware/DWC (incl. betas or self-compiled)
                    My Tool Collection

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                    • Steffenundefined
                      Steffen
                      last edited by

                      Here's my start script, something that's not necessary

                      G28 ; home all axes
                      G91
                      G1 Z5 F1800
                      G90
                      G1 Z-275 F40 S1; Move slowly to Z axis endstop once more (second pass)
                      G1 X0 Y5 Z0.2 F3000 ; get ready to prime
                      G92 E0 ; reset extrusion distance
                      G1 X250 E20 F600 ; prime nozzle

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                      • OBELIKSundefined
                        OBELIKS
                        last edited by

                        What do you have in homeall.g ?
                        Because all of this

                        G91
                        G1 Z5 F1800
                        G90
                        G1 Z-275 F40 S1; Move slowly to Z axis endstop once more (second pass)
                        

                        should be in there. It gets executed with G28

                        P3Steel Toolson mk2 - Duet 2 WiFi --> RatRig V-Core with Duet WiFi 1.03
                        Original Prusa i3 MK3S

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                        • Steffenundefined
                          Steffen
                          last edited by

                          ; homeall.g
                          ; called to home all axes
                          ;
                          ; generated by RepRapFirmware Configuration Tool on Tue Jun 06 2017 22:17:43 GMT+0200 (Rom, sommertid)

                          ; Relative positioning
                          G91

                          ; Lift Z
                          G1 Z5 F4000 S2

                          ; Course home X and Y
                          G1 X-305 Y-305 F1800 S1

                          ; Move away from the endstops
                          G1 X5 Y5 F6000 S2

                          ; Fine home X and Y
                          G1 X-305 Y-305 F360 S1

                          ; Absolute positioning
                          G90

                          G1 Z-275 F800 S1

                          G91
                          G1 Z5 F1800 S2
                          G90

                          ;mowe slowly to z axis endstop once more (secone pass)
                          G1 Z-275 F360 S1

                          ; Go to first bed probe point and home Z
                          ;G1 X15 Y15 F4000
                          ;G30

                          ; Uncomment the following line to lift the nozzle after probing
                          ;G1 Z5 F100

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                          • Steffenundefined
                            Steffen
                            last edited by

                            One of my friends sent this file and when I print it is okay
                            I can't see what's wrong

                            0_1555150796397_infinityheart.gcode

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                            • Steffenundefined
                              Steffen
                              last edited by

                              By the way, it's a machine similar

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                              • Phaedruxundefined
                                Phaedrux Moderator
                                last edited by

                                We've explained why it's doing it.

                                You have homing moves in your start gcode in the slicer that shouldn't be there.

                                Let's compare the file your friend has to yours.

                                His

                                G90
                                M83
                                M106 S0
                                M140 S80
                                M190 S80
                                M104 S240 T0
                                M109 S240 T0
                                G28 ; home all axes
                                G1 X0 Y5 Z0.2 F3000 ; get ready to prime
                                G92 E0 ; reset extrusion distance
                                G1 X250 E20 F600 ; prime nozzle
                                

                                Yours

                                G90
                                M82
                                M106 S255
                                G4 P500
                                M106 S128
                                M140 S80
                                M190 S80
                                M104 S247 T0
                                M109 S247 T0
                                G28 ; home all axes
                                G91
                                G1 Z5 F1800
                                G90
                                G1 Z-275 F40 S1; Move slowly to Z axis endstop once more (second pass)
                                G1 X0 Y5 Z0.2 F3000 ; get ready to prime
                                G92 E0 ; reset extrusion distance
                                G1 X250 E20 F600 ; prime nozzle
                                

                                Do you see the difference?

                                You need to remove this from your start gcode in the slicer.

                                G91
                                G1 Z5 F1800
                                G90
                                G1 Z-275 F40 S1; Move slowly to Z axis endstop once more (second pass)
                                

                                Z-Bot CoreXY Build | Thingiverse Profile

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                                • Steffenundefined
                                  Steffen
                                  last edited by

                                  Yes it makes sense Thank you

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