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    Strangest issue yet, Z not moving during print

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    • Phaedruxundefined
      Phaedrux Moderator
      last edited by

      Do you have anything in your tool change files? Tpre tpost etc.

      Yes you can swap the SD card for testing. I was going to suggest trying different drivers but if they move normally during other moves just not a print something else must be wrong.

      Can you send m906 and m913 during a print to check motor currents?

      Z-Bot CoreXY Build | Thingiverse Profile

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      • Vetiundefined
        Veti
        last edited by

        @cdl1701yahoo-com said in Strangest issue yet, Z not moving during print:

        M208 X0:358 Y0:361 Z0:400 ; Set axis min/max
        M208 U0:200 ; Set axis min/max

        thats not how M208 works in rrf.

        M208 X0 Y0 Z0 U0 S1 ; set axis minima
        M208 X358 Y361 Z400 U200 S0 ; set axis maxima

        JamesMundefined 1 Reply Last reply Reply Quote 0
        • Vetiundefined
          Veti @cdl1701yahoo.com
          last edited by

          @cdl1701yahoo-com said in Strangest issue yet, Z not moving during print:

          G31 P25 X-3 Y-39.3 Z0.00 ; Set Z probe trigger value, offset and trigger height
          G10 P0 X0 Y0 Z0.69 ; Reset tool 0 axis offsets
          G10 P1 X0.99 Y1.2 Z0.8 ; Reset tool 1 axis offsets

          i think that is causing the problem.

          G10 P0 X0 Y0 Z0.69 ; Reset tool 0 axis offsets
          should be
          G10 P0 X0 Y0 Z0 ; Reset tool 0 axis offsets

          and the offset should be defined in G31
          and the difference for the second one should be defined in G10 P1

          cdl1701yahoo.comundefined Vetiundefined 2 Replies Last reply Reply Quote 0
          • cdl1701yahoo.comundefined
            cdl1701yahoo.com @Veti
            last edited by

            @Veti
            You were on to something Veti, I removed the Z Offset for tool 0, no change, so I removed the offset for tool 1 as well now it works fine. 😕 I know there is a way to set tool offsets in the tool change files but not sure how to do that.

            @Phaedrux
            Here is what is in my tool change files. The tool 0 files are the same aside from to tool pickup/drop off locations.

            tfree1.g
            G53 G0 X350 Y278 F25000 ; Rapid to the approach position with tool-0. (park_x, park_y - offset)
            G53 G1 Y357 F2000 ; Controlled move to the park position with tool-0. (park_x, park_y)
            M98 P"/macros/TOOL_CHANGE/Tool_Unlock.g" ; Unlock the tool
            M400
            G4 P500
            G53 G1 Y278 F6000 ; Retract the pin.
            M106 P6 S0 ; Fan off

            tpost1.g
            M106 R2 ; restore print cooling fan speed

            tpre1.g
            G0 X350 Y278 F25000 ; Rapid to the approach position without any current tool.
            G1 Y357 F2000 ; Controlled move to the pickup position with tool-0.
            M400
            G4 P500
            M98 P"/macros/TOOL_CHANGE/Tool_Lock.g" ; Lock the tool
            M400
            G4 P500
            G1 Y278 F6000 ; Retract the entire tool.
            M98 P"/macros/TOOL_CHANGE/Tool_Lock.g" ; Lock the tool
            G60 S2 ; Save this position as the reference point from which to later apply new tool offsets.

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            • Vetiundefined
              Veti @Veti
              last edited by

              @Veti said in Strangest issue yet, Z not moving during print:

              G10 P1 X0.99 Y1.2 Z0.8 ; Reset tool 1 axis offsets

              what you are configuring there is that the nozzle is 0.8mm above 0.
              so in order to print it would have to move 0.6 (assuming 0.2 layer height) below zero.
              yet normaly movement below 0 is forbidden (for good reasons)

              cdl1701yahoo.comundefined 1 Reply Last reply Reply Quote 1
              • cdl1701yahoo.comundefined
                cdl1701yahoo.com @Veti
                last edited by

                @Veti
                Yes, so I have two tools that get picked up by the tool head like what is done in the E3D tool changer. I am using a Bltouch as my Z-probe and it triggers the nozzle is around 0.4 to 0.6 above the bed so I applied those Z offsets in the G10. I may not be doing it right though....

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

                  @Veti said in Strangest issue yet, Z not moving during print:

                  @cdl1701yahoo-com said in Strangest issue yet, Z not moving during print:

                  M208 X0:358 Y0:361 Z0:400 ; Set axis min/max
                  M208 U0:200 ; Set axis min/max

                  thats not how M208 works in rrf.

                  M208 X0 Y0 Z0 U0 S1 ; set axis minima
                  M208 X358 Y361 Z400 U200 S0 ; set axis maxima

                  @Veti
                  It was changed in rrf to allow you to set the min and max in a single line and that is how I do it on my CoreXY printer. This is my m208 line which works perfectly

                  M208 X-5:340 Y0:334 Z450

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

                    @JamesM said in Strangest issue yet, Z not moving during print:

                    It was changed in rrf

                    i missed that change

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                    • Vetiundefined
                      Veti @cdl1701yahoo.com
                      last edited by

                      @cdl1701yahoo-com said in Strangest issue yet, Z not moving during print:

                      I am using a Bltouch as my Z-probe and it triggers the nozzle is around 0.4 to 0.6 above the bed so I applied those Z offsets in the G10. I may not be doing it right though....

                      do check again, because it explains exactly why it does not move for the first 3 layers.

                      cdl1701yahoo.comundefined 1 Reply Last reply Reply Quote 1
                      • cdl1701yahoo.comundefined
                        cdl1701yahoo.com @Veti
                        last edited by

                        @Veti
                        Yep that was the whole issue did two prints last night and all went successfully.
                        Thanks for the help and pointing me in the right direction!

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