My z-axis has gone crazy. One time it will cut too deep and the next it will not cut at all.
Example: I am trying to carve the name TODD. When I run the program, the machine cuts the “O” first way too deep, then moves to the “D” and the bit lowers, but is still about 1/4" above the material.
Is the control board shorted out as far as the z-axis goes? The x and y-axis both work correctly.