How to Zero a Bridgeport Milling Machine: 12 Steps wikiHow
Mar 29, 2019· Obtain an edge finder and appropriate collet and attach to the mill similar to the dial indicator. Start up the mill and run it between 500 and 1000 RPM. Do not change the RPM of the mill without the machine running. Jog the edge finder to a flat side on either the left or right side of your part.