anyone getting into cnc i found a great deal .the web site is called roton it is for you x and y axes .they have a great price on there 0.625 screw at 10.06 a foot and 23 and change for the ball nut .and the steel is machineable to make your mill/ lathe lead screws . i was told by the company it does have a backlash of 0.004 but this can be comped out in mach 3 or on your dro i cant wait to get mine in i am tired of makeing eggs ....jay