I wanted a U axis for the quill. This allows me to have a separate Z and U, or a combined Z/U. I have pretty much been using Z and U independently.
I also wanted it to be a minimal install, and did not want it to substantially degrade the existing operations, like setting quit stops, and allowing access to the nuts to allow quill rotation.
I also wanted it to be a minimal install, and did not want it to substantially degrade the existing operations, like setting quit stops, and allowing access to the nuts to allow quill rotation.