Several questions:
- Awhile ago there was a post somewhere asking folks to post the 
shank bore diameters that they have found in 'stock' pieces...e.g. I 
have found that tenor pieces vary from 16.7mm up to about 17.1mm and 
bari pieces seem to vary from about 17.4 up to about 18.1 mm. A given 
cork setup can accommodate a range of about .2 mm without shimming 
(teflon tape) or excessive compression, although <0.1 is better. Any 
comments about what is a 'most common' or 'standard' diameter

- Any thoughts on tools for creating a clean, round bore for 1) 
enlarging an existing one or 2) reboring a shank that has been faired 
with some acrylic or epoxy? I have looked at the Abtex flexible hones 
with some relish when my fingers were raw from sanding an ID by hand.

http://www.abtex.com/flexhone.html (any experience with these or 
similar tools?)

I have only used sanding drums with my rotary tool on a flex shaft.

You might look in to machinist's reamers.  I have not tried one yet.

I have a lot of measurements of bores but I need to summarize them.  Some
of them are from tapered bores and some are not.  But I did not try to
record the taper.


	
		
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Amazing...can you actually control the removal on a HR piece to, say, 
open a piece by 0.1-0.2 mm? I don't have a handpiece, so I'm handling 
the whole tool....I didn't imagine that I could keep it straight, so 
I still burn fingers. These Abtex hones lookes interesting...can you 
fit a standard Jacobs chuck to your handpiece to use these 
delicately. I was thinking that I might chuck them in a drill press, 
run it at, say 250-300 RPM and handle the mouthpiece, while using a 
foot control to turn the reamer on and off. 


--- In MouthpieceWork@yahoogroups.com, Keith Bradbury 
<kwbradbury@y...> wrote:
> I have only used sanding drums with my rotary tool on a flex shaft.
> 
> You might look in to machinist's reamers.  I have not tried one yet.
> 
> I have a lot of measurements of bores but I need to summarize 
them.  Some
> of them are from tapered bores and some are not.  But I did not try 
to
> record the taper.
> 
> 
> 	
> 		
> __________________________________
> Do you Yahoo!?
> Yahoo! Movies - Buy advance tickets for 'Shrek 2'
> http://movies.yahoo.com/showtimes/movie?mid08405861

I use an old Weller roatary tool with a flex shaft and a variable speed
foot pedal.  I have several sizes of sanding drums.  I use the largest that
will fit in the shank.  I just keep sweeping it around the bore.  I track
progress with calipers.  It does not remove HR material as fast as you
would think.  It takes a few minutes to remove .003".  I have to keep
cleaning away the dust to make progress.  If calipers show that the bore is
not round, I find it pretty easy to direct the tool to widen up the tight spots.


	
		
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