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    CoreXY suddenly moves diagonaly

    Tuning and tweaking
    corexy homing
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    • fotomas
      fotomas last edited by fotomas

      It started with a spaghetti print, I heard noices from the printer and went to check. It was printing 100mm off.

      I stoppped the print and rehomed. To my surprise the straight moves to find the end of axis (sensorless) were not straight. It moves mostly in the expected direction but some in the other axis too.

      Since it is a CoreXY I am guessing the motors are not moving citrectly.

      A short video of home axis separately. The first one moves in the oposite direction !?!

      Video

      No configuration has been altered so I am guessing a hardware issue??

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      • alankilian
        alankilian last edited by

        Check to make sure your stepper motor pulleys are tight.

        Try to move the head "by hand" slightly back and forth with the stepper motors engaged and holding position and you might feel that you can move the extruder some. That's an indication one of the screws on the stepper shaft got loose.

        SeemeCNC Rostock Max V3 converted to V3.2 with a Duet2 Ethernet Firmware 3.2 and SE300

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        • Veti
          Veti last edited by

          i concur. that looks like a loose pulley.

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          • fotomas
            fotomas last edited by

            Ok I will check that, thanks!

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