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 so we may diagnose.

Log in to reply

Looks like your connection to MatterHackers Community was lost, please wait while we try to reconnect.