Lathe cross slide conversion to a ball screw

[tonyfoale]

I'm certain elimination of backlash is part of that, with a common leadscrew subject to vibration, wear and imperfect mating surfaces.
It's also why climb milling [on ball screws] is OK, even by hand.

My mill had ball screws from new and I almost always use climb milling without problems. That is both manual and CNC.