dave wrote: > GOOD GRIEF!! and I thought 0.003 on X and Y was bad. > Well, that was the original 1938 Acme screw and bronze nuts. The threads in the center of the X screw are thinner to the extent you can see it from ten feet away! Now, I have a "backlash" of about .001 - .0015 on all the axes of my mill. It is not true backlash but spring in the various mountings of the ballscrews and nuts.
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