Back in January Sy Wexler posted a message with the mil specs on hole
tolerances. You will find it if you go to google groups and search
for and How straight are drilled holes. Lots of good
info.

Dan


"Bill Chernoff" wrote in message news:%q3Ac.732915$Pk3.3341@pd7tw1no...
I am drilling 13/64 holes 2 inches deep in 6061. The bottom of the hole
wanders as as much as 0.020-0.030 off center. What is the best straightness
I can hope for on a hole that size, that deep?

Any drill sharpening, etc, hints?

Thanks