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    Axis steps/mm issues - correct values moving too far

    Tuning and tweaking
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    • sandy
      sandy last edited by

      Background, I'm retrofitting an old Rostock Max V1 with 15 -tooth pulleys and 106.67 steps/mm - I began doing some tests to set height before running autocalibration. The problem is, my motors are moving too far no matter what I enter for axis steps per mm.

      My config.g has this: M92 X106.7 Y106.7 Z106.7

      With a ruler the height from my nozzle to my bed is about 385mm. When I hit Z-100 twice, I hit the bed. But the web interface reads approximately Z180.
      When I start from home position (385mm) and go down by 10 (Z-10) when I'm supposed to be at ~300, I'm at 285 or so.

      I've tried numerous attempts at changing the M92 values, including raising the steps/mm by 50 and lowering them by 50 - but this seems to have no effect at all. That is,
      M92 X156.7 Y156.7 Z156.7 and M92 X56.7 Y56.7 Z56.7 - reach the same height of around 285 after hitting Z-10 8 times from a home height of 385.

      I don't know what to try next. Any ideas?

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      • dc42
        dc42 administrators last edited by

        Please post your whole config.g file.

        EDIT: I see from your other post that you have resolved this.

        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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