Gluing & Bleaching Ivory

[Alan R. Barnard]

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.
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