Gluing & Bleaching Ivory

[gordon stelter]

How do you use the white glue and CA glue together? Do
you mix them? What ratio?
--- "Alan R. Barnard" <mathstar@salemnet.com> wrote:
> I have had wonderful results soaking yellowed,
> darkened, or stained ivories
> in pure 40% Hydrogen Peroxide--the kind they bleach
> hair with and available
> through beauty supply outlets. Don't know if this is
> my discovery, something
> everyone already knows about, or something I read in
> the Potter course.
> Anyway, it sure works and does not warp the ivories,
> which was a concern.
> 
> Also, be careful with that stuff--it will burn you
> contact with skin!
> 
> Re: Don's message below .......
> 
> Would you be kind enough to sketch out your whole
> technique for regluing
> ivory tops? Where does one acquire this CA everyone
> is talking about? Are
> you painting keytops or ivory backs with white paint
> or white lacquer or
> anything?
> 
> Alan R. Barnard
> Salem "Our town's Subway Store burned down last
> night", MO
> 
> ----- Original Message -----
> From: "Don" <pianotuna@accesscomm.ca>
> To: <pianotech@ptg.org>
> Sent: Wednesday, July 31, 2002 1:07 PM
> Subject: RE: CA gluing
> 
> 
> > Hi Susan,
> >
> > I have had ivory "pop off" after glueing with just
> CA--but of course now I
> > use white glue/ca and that works extremely
> well--so far zero failure rate.
> >
> > I am a proponet of CA glue for old uprights or
> grands of small size. So
> far
> > the only "failure" was that one upright piano
> became too tight and the
> pins
> > sheered off. That instrument had had pin tite on
> it and had failed after a
> > number of years so the CA glue was definitely a
> last ditch effort. You
> > mentioned if a little is good less is even better.
> My approach has been
> the
> > opposite, and it works well.
> >
> > I have measure torque on instruments after
> treatment and it is so far
> > always improved, as has tuning stability.
> >
> > For bridges it seems sealing the wood with ultra
> thin CA, followed by
> thick
> > to fill any cracks works very well. The first
> instrument I did with this
> > method is still just fine and the tone was
> improved.
> >
> > I do suggest to the client that a full DC system
> be added to any CA
> > repaired instruments.
> >
> > Regards,
> > Don Rose, B.Mus., A.M.U.S., A.MUS., R.M.T., R.P.T.
> >
> > mailto:pianotuna@accesscomm.ca
> >
> > http://us.geocities.com/drpt1948/
> >
> > 3004 Grant Rd.
> > REGINA, SK
> > S4S 5G7
> > 306-352-3620 or 1-888-29t-uner
> 


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