I have a Wanhao Duplicator i3 from which I have blown the Z axis stepper motor. I would like to be able to have all three axes of motion available for another project. I am trying to see if there's an easy way so that instead of using the Z (blown out) motor driver, it uses the extrude motor driver to control the Z axis. Like when it gets the command to move the Z, it outputs that command through the extruder motor. I'm using Marlin firmware (i3 plus plus) if that helps.
pins_<boardname>.hfile for the E0 and the Z stepper, like shown in "How to switch motor outputs and use E1 as X, in Marlin firmware?". $\endgroup$