Don't under estimate the job the ballnut mount does.!!

Ballscrew mounts, alignment and nut holding are crucial to a good working machine, if any one is off the slightest amount the result is friction.
This friction as to be overcome by the motors, the motors lose torque as the speed increase. Has the speed increase's friction heats things up which inturn creates more friction sapping more power end result stalling motors or missed steps at best.!!. . . . Worse case things lock and prematurely wear away often quickly in tight ballnut's case and die suddenly.

Saving a fiver can cost hundred.!!.. . . Is it really worth it.????