Hi to all members i don't know if im posting in the correct forum please let me no if i have.
first of all i have done some research on converting my freejoth knee mill to cnc and i now have some questions i would like to ask if possible

which drive method would be best for the z axis ,moving knee up and down or driving the quill.

are rolled ball screws of a quality that can be used or do i need to use expensive ground ball screws.

is it possible to change the vary speed drives for a fixed drive so i can install a vfd or is there a way of doing this without changing discs.

it appears that my machine would need 25mm ball screws but what pitch would be best for this as i am thinking a/c servo motors.

i hope these questions don't seem stupid so someone can put me in the right direction please