Quote Originally Posted by Jonathan View Post
It's just occurred to be that you could purposefully have the gantry built a little out of square, force it with the motors/ballnuts to reduce or eliminate backlash. The pressure on the ballnuts from squaring the gantry would preload both X-ballnuts rather like if you have double nuts with a spring.
That then would just be a bodge to hide poor workman ship.!!. . . . . . . Plus it wouldn't preload the nut it would twist the nut.!. . Yes the affect would appear the same as taking up backlash but what it's actually doing is twisting Nut body onto the balls which in turn apply force against the screw. Both the screw and Ballnut are not designed to run with forces in this direction so again your forcing the screw and nut to run out of design parameters.. . . This cause's premature wear.

Much better to build right first time IMO.!!


Quote Originally Posted by Jonathan View Post
Yes they have.
Aghh Yipee... Thanks for letting me know.!!