This isn’t my first project and also not my first time experiencing these issues with the Z-Axis grinding and going in the opposite direction. The first major issue I had was on a previous project where it seemed the CNC lost the Z-Axis and plunged all the way into the waste board. At the time I did a little bit of research and concluded that I had the plunge rate too high and that that was likely why it lost its z-axis point. So I lowered it in my G-Code, tried again after some aggravation with initializing but it got to a point where everything was fine.
Now I just ran a project and had the same issue happen with my plunge rate a 9 in/min and the project got to about halfway until it crashed into the wasteboard again. Currently, the Z Axis is moving in reverse and grinding when trying to initialize. I ALSO noticed that the wire connecting to the homing switch when moved will light up on and off so Im sure that shouldn’t be the case at all. I am attaching the link to my videos as well as the G-Code I was using. Anyone with insight or direction will be very much appreciated.
Akeem NamePlate.nc (1.6 MB)