"Ignoramus6705" wrote in message
...
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.

i

You'll never CNC Gcode to bore accuracy. You'd have to check your machine
but a circle to +/- .002 with G02/03 would be awful good for your machine.
For accurate bores get a boring bar. I'm partial to devleig microbore - they
do 2 tenths easily and I own a complete set from .250" to over 6.0". I
lock the gibs down tight while boring to get this.

http://cgi.ebay.com/DEVLIEG-HEAVY-ME...item359fdc41ac