Hello, I was wondering if anyone had some information on O'Brien 
crystal clarinet mouthpieces. Like info on O'Brien himself and the 
mpcs.

Also, how would one fix a chip in the beak? Isn't there an epoxy 
that can be used? How does it turn out? Like does it seem like 
nothing ever happened, or will there be a blemish?

Thanks!
Bonnie

Since clear epoxy is a different color than glass (always a bit yellowish) and has a different refractive index and translucency any repair will be visible. As to whether it is permanently repairable, much would depend on the size, shape and position of the chip.

Toby
  ----- Original Message ----- 
  From: cumkwatcheesemuffin 
  To: MouthpieceWork@yahoogroups.com 
  Sent: Friday, June 18, 2004 9:35 AM
  Subject: [MouthpieceWork] O'Brien mouthpieces


  Hello, I was wondering if anyone had some information on O'Brien 
  crystal clarinet mouthpieces. Like info on O'Brien himself and the 
  mpcs.

  Also, how would one fix a chip in the beak? Isn't there an epoxy 
  that can be used? How does it turn out? Like does it seem like 
  nothing ever happened, or will there be a blemish?

  Thanks!
  Bonnie



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I have refaced almost ten O'Brien mp four of them with
important chip just on the tip aperture side.
Since, in the 30ties, mps were produced by artizan
methods and not like  the actual ebonite using numeric
control mill machine, hand refacing sometime will give
better result in quality of sound and intonation then
in the original.
The procedure is: first eliminate the chip, and after
close the aperture to the desired value.
The roof hight will conseguently be reduced and
sonority increased which is normally a benefit.
Since the resonant chamber, which is the real best
feature in O'Brien mp, stays the same, tipical sound
colour remain also the same.
The glass used by O'Brien is very tender and little
green coloured in the early production (that ones
signed O'Brien on the table) of better crystal quality
in last production.
Manfredo Cavallini
www.clarinet.it



	

	
		
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Will cyanoacrylate ("super glue") stick to the glass well?  Can a chip 
be repaired, even if not an invisible repair, with CA glue and baking 
soda (sodium bicarb)? 

Paul

ZADIGNABLA wrote:

> I have refaced almost ten O'Brien mp four of them with
> important chip just on the tip aperture side.
> Since, in the 30ties, mps were produced by artizan
> methods and not like  the actual ebonite using numeric
> control mill machine, hand refacing sometime will give
> better result in quality of sound and intonation then
> in the original.
> The procedure is: first eliminate the chip, and after
> close the aperture to the desired value.
> The roof hight will conseguently be reduced and
> sonority increased which is normally a benefit.
> Since the resonant chamber, which is the real best
> feature in O'Brien mp, stays the same, tipical sound
> colour remain also the same.
> The glass used by O'Brien is very tender and little
> green coloured in the early production (that ones
> signed O'Brien on the table) of better crystal quality
> in last production.
> Manfredo Cavallini
> www.clarinet.it
>
>
>
>      
>
>      
>            
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I've never done it myself, but I might try a castable acrylic (2-part 
mix) that you can get from Tap Plastics. I use this extremely clear 
very hard plastic for a variety of jobs around the shop.

jeff

--- In MouthpieceWork@yahoogroups.com, Paul Coats <tenorman@t...> 
wrote:
> Will cyanoacrylate ("super glue") stick to the glass well?  Can a 
chip 
> be repaired, even if not an invisible repair, with CA glue and 
baking 
> soda (sodium bicarb)? 
> 
> Paul
> 
> ZADIGNABLA wrote:
> 
> > I have refaced almost ten O'Brien mp four of them with
> > important chip just on the tip aperture side.
> > Since, in the 30ties, mps were produced by artizan
> > methods and not like  the actual ebonite using numeric
> > control mill machine, hand refacing sometime will give
> > better result in quality of sound and intonation then
> > in the original.
> > The procedure is: first eliminate the chip, and after
> > close the aperture to the desired value.
> > The roof hight will conseguently be reduced and
> > sonority increased which is normally a benefit.
> > Since the resonant chamber, which is the real best
> > feature in O'Brien mp, stays the same, tipical sound
> > colour remain also the same.
> > The glass used by O'Brien is very tender and little
> > green coloured in the early production (that ones
> > signed O'Brien on the table) of better crystal quality
> > in last production.
> > Manfredo Cavallini
> > www.clarinet.it
> >
> >
> >
> >      
> >
> >      
> >            
> > ____________________________________________________________
> > Yahoo! Companion - Scarica gratis la toolbar di Ricerca di Yahoo!
> > http://companion.yahoo.it
> >
> >
> > Got a Mouthpiece Work question?  Send it to 
MouthpieceWork@yahoogroups.com
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> > Visit the site at http://groups.yahoo.com/group/MouthpieceWork to 
see 
> > the Files, Photos and Bookmarks relating to Mouthpiece Work.
> >
> > To see and modify your groups, go to 
http://groups.yahoo.com/mygroups
> >
> >
> > Yahoo! Groups Sponsor
> > ADVERTISEMENT
> > 
<http://us.ard.yahoo.com/SIG9qmdc2o/M)8184.5022502.6152625.300117
6/D=grplch/S05032198:HM/EXP87852223/A!64339/R=0/SIGe2d64in/
*http://www.netflix.com/Default?mqso`183348> 
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I am sorry but does not exist any glue, for glass,
that will be stable under the continuous vibration of
the reed in a wet alcaline ambient like clarinettist
mouse.
Only a glass to glass fusion in oven at least at 750
�C hoping that the glass of mp has a higher melting
point than that of soldering glass(that should be
phisically and chemically compatible) but after, you
should reface it in any case.
I have tryed also structural epoxy after ultrasonic
clening but after an unforseenable period of time you
discover that (just during an exibition) your mp is
cipped again.


	

	
		
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An artistic glass blower might be able to dab a bead of glass on it.  Then
you would probably need to have it stress relieved in an anealing oven (or
lehr).

Lab chemists also play around with burners and glass tubing.


	
		
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You are rite, KWB, BUT, on back I asked our art.- tech, PRO glass blower  
[PPCo] about repairs on a ?high-lead? glass mp, and he refused, as its  being 
"too chancy" [of success], so I just kept my pieces. With a bit of  experience, I 
follow M C's advice.  Don