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    POLAR PRINTER

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    • xXJRUSHMANXxundefined
      xXJRUSHMANXx
      last edited by xXJRUSHMANXx

      Good morning everybody. I'm making a polar printer, where X is angular mov and Y,Z are lineal. Is not the turntable, its "turnbody" machine.
      Looking for a Z=0 plane, we have some type of a "donut" print zone. (Ej: Dint=10cm; Dext=40cm;) I think that the coordinates origin of cartesian / polar sistem are the center of the machine.
      In config I have M669 K7 .... but I dont khnow to make correct configuration becouse I have different design.

      7bd611f3-19b1-40b3-bdff-b2ad22753c32-image.png

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      • dc42undefined
        dc42 administrators @xXJRUSHMANXx
        last edited by

        @xXJRUSHMANXx have you read https://docs.duet3d.com/en/User_manual/Machine_configuration/Configuration_Polar ?

        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

        xXJRUSHMANXxundefined 1 Reply Last reply Reply Quote 1
        • xXJRUSHMANXxundefined
          xXJRUSHMANXx @dc42
          last edited by xXJRUSHMANXx

          @dc42, yes I did! I'm sorry for my ignorance.
          I have some accurate questions about it:

          1. How you can see, my Rmax=400mm and Rmin=100mm from the center of rotation. But at 100mm from this center, I have "X_end" => H100.
            So, It's correct M669 K7 R100:400 H100?
            Or It should to be M669 K7 R0:300 H100?
          2. If I have TB6600 drivers configurated by micro-stepping, I understand that I no need Snnn and Tnnn (segmentation), true?
          3. In a sample, you don't have M208 for Z axis. I think that its necesary here.
          4. About the interface, I don't khnow softwares that can manipulate "donut_print_zone", should I send Gcodes manually (in cartesian coordinates)?

          I hope I'm not disturbing you so much... I really need to get it for my university project. I've been with this for a long unsuccessfully.
          When I finish it, I would like to reward you for your help!!!!

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          • dc42undefined
            dc42 administrators @xXJRUSHMANXx
            last edited by

            @xXJRUSHMANXx said in POLAR PRINTER:

            So, It's correct M669 K7 R100:400 H100?

            That's correct if your radial homing switch triggers at radius 100mm.

            @xXJRUSHMANXx said in POLAR PRINTER:

            If I have TB6600 drivers configurated by micro-stepping, I understand that I no need Snnn and Tnnn (segmentation), true?

            Segmentation is always used when polar kinematics is selected. You can omit the S and T parameters to use the default, or choose them yourself.

            In a sample, you don't have M208 for Z axis. I think that its necesary here.

            Yes, you should use M208 to configure the Z axis limits.

            About the interface, I don't khnow softwares that can manipulate "donut_print_zone", should I send Gcodes manually (in cartesian coordinates)?

            For normal prints that don't have a large hole in the centre on all layers, you will need to offset the print so that e.g. all X coordinates are at least +100mm. You may be able to configure this in your slicer. Alternatively, use G10 with parameter L2 to configure a workplace offset, and put this in your slicer start GCode.

            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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