Strange z axis ticking



  • HI


    I am using a Prusa I3 Mk2 upgraded clone with Ramps 1.4, A8994 drivers and Mattercontrol.

    Recently, after printing perfectly for days, the z axis has started ticking and slowly moving upwards before a print. This only happens between pressing the print button and the hotend moving to its print position.

    I have tried:
    1. Swapping drivers
    2. Setting a lower Vref
    3. Checking ease of movement of screw threads

    The result is a random Z offset and prints not adhering to the bed.

    This does not occur if I export the gcode file to SDram and insert it into the printer. It prints normally


    Anyone had the same?

  • MatterHackers

    @Focussys I have never heard of this occurring before until now. Do me a favor and take a short video of the issue and send it to support@matterhackers.com so we may diagnose.


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