Re: Adjustments for accuracy?
So re-run your CAM software with your tool diameter 0.006" undersize. Voila: 0.751x0.749 blocks. In spec.
Maybe the thrust bearing on your X axis is loose? Maybe both X & Y?
Current version of the manual on page 166, Section 9.3.4, has instructions for "Angular Contact Bearing Preload Adjustment". If this is insufficient, than you would see what you are seeing.
I don't see this mentioned in the discussion above.
Tim
Tormach 1100-3, Grizzly G0709 lathe, Clausing 8520 mill, SolidWorks, HSMWorks.