"Gunner Asch" wrote in message
...
On Fri, 29 May 2015 11:00:46 -0400, "Jim Wilkins"
wrote:

"Ned Simmons" wrote in message
. ..
On Fri, 29 May 2015 09:12:36 -0400, "Jim Wilkins"
wrote:



I missed the fact that you're using an inside mic. I have a couple
of
that style, but rarely use them. For this sort of thing I'm more
comfortable with a telescoping gauge and outside mic, thus my
suggestion to use the bearing as a standard. It seems to me the
telescoping gauge gives a better feel than the inside mics and
makes
a
direct comparison between the bearing and bore easier.

--
Ned Simmons

Thanks. I've had trouble with telescoping gauges previously,
probably
because I didn't have a rigid enough boring bar to get a smooth
finish. I just measured the inside mike's setting ring with one and
hit 1.0000" on the first try.

-jsw

Rule #1..dont use a boring bar UNLESS you absolutely need one.
Rule #2 Keep it as absolutely short as possible.
Rule #3. Make it as fat as you can.

I've had the 3/4" boring bar for a long time, but was stuck on how to
cut a 5/16" lathe bit for it to length at the correct angle until I
tried the 7" angle grinder with a cutoff disk.
-jsw