Commercial CNC mills typically have a home position which defines a physical location. This is the center of rotation of the spindle with respect to some feature on the table. I did buy some nice home switches for my little hobby CNC mill but was not happy with their repeatability. This article presents a low tech method to accomplish this same goal.

If you are interested, please see

http://rick.sparber.org/HSH.pdf


Your comments are welcome. All of us are smarter than any one of us.