Well since converting the ZX45 to CNC I have had no use for my X2. I have seen some have taken the head off of the 7X10-12 lathe for a 4th axis but from all of the ones I have seen everyone is using the stepper/servo motor to hold the spindle in place. I would like to implement some type of breaking system but not sure how or if anyone has done this. Any thoughts? I was thinking of using an air cylinder to release some sort of clutch style lock.