Ignoramus6705 wrote:
My friend told me that he saw something written somewhere that
Bridgeport Interacts cannot mill (bore) a precisely round hole,
because of stretch on the servo motor timing belts. What do you think
about this statement.

Oh, and finally, if you don't have a Renishaw ball-bar tester, you just
don't have the gear to find out what your machine really is capable of.
You can try milling a bore and measuring the fit, or sweeping the ID
with a tenth-reading DTI, but that will only give you a rough idea.

Jon