Originally Posted by
metalmayhem
I think I pushed mine to 6.5" by moving the stops . I don't think you'll gain anything by going to proximity sensors since your limited by physical machine travel . Also , the back way cover can only be squeezed so much before you have problems , throw in a few chips and theres the likelihood of the motor getting stalled . Same goes for the front except you can extend the covers out a bit . I think I've seen somewhere a mill that was pushed to 7" or so , but I wouldn't do it without swapping out the covers for something else .
The x on the other hand is an easy mod if you ever need more there . A simple ballscrew swap has a couple of my mills at 11.75" travel , Otherwise I pushed 10.5" with the stock screws , and that was bringing the end of the screw flush with the ballnut