"Pete C." fired this volley in news:4d62907a$0$1855
:

For a servo
connection you need to use a "hard" connection. Note that in a manual
mill, the feedback from the dial or from a scale is after the handle
clutch and thus the handle clutch backlash is not a factor.


So long as you mean "tight", not "hard" I agree.

A lot of stepper-drive machines use a Lovejoy coupling between motor and
ball screw, with a very tight (even very tightly compressed) spider.

LLoyd