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    My print is too much tall

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    • Arisoyundefined
      Arisoy
      last edited by

      Hello,

      Can someone explain me why my cube is not... a cube...

      IMG_20220125_225338.jpg

      Leadscrew are TR8*8 and this is my parameter in config.g :

      M92 X80.00 Y80.00 Z800.00
      

      Is this line false? Is it something else?

      jay_s_ukundefined deckingmanundefined 2 Replies Last reply Reply Quote 0
      • jay_s_ukundefined
        jay_s_uk @Arisoy
        last edited by

        @arisoy try Z400

        Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is

        1 Reply Last reply Reply Quote 1
        • deckingmanundefined
          deckingman @Arisoy
          last edited by

          @arisoy To expand on what @jay_s_uk has said.....assuming your stepper is a "normal" 1.8 degree motor, then it has 200 full steps per revolution. A TR8 screw has a lead of 8mm meaning that a nut positioned on the screw will travel 8mm in one revolution - or in your case, the Z axis will travel 8mm for one revolution of the screw. So we have 8mm = 200 full steps therefore 1mm will be 25 full steps. Assuming you use 16x micro-stepping that's 400 (25 x 16) steps per mm.

          Ian
          https://somei3deas.wordpress.com/
          https://www.youtube.com/@deckingman

          Arisoyundefined 1 Reply Last reply Reply Quote 2
          • Arisoyundefined
            Arisoy @deckingman
            last edited by

            @deckingman Thanks for your explanation. I did the calculation too but somehow i miss something...

            Thanks a lot everything is working fine now 🙂

            deckingmanundefined 1 Reply Last reply Reply Quote 0
            • deckingmanundefined
              deckingman @Arisoy
              last edited by

              @arisoy Glad you got it sorted. Maybe you did the calculation for 0.9 degree steppers? - They have 400 full steps per revolution which would be 50 full steps per mm, so 800 would be correct for a 0.9 degree motor.

              Ian
              https://somei3deas.wordpress.com/
              https://www.youtube.com/@deckingman

              1 Reply Last reply Reply Quote 0
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