Verdigris

[DICK BEATON]

Use protech solution to deal with vetigris... I used this on a Steinewy B
that sat around for 25 years unused.  It worked just fine not only on the
hammer butt flanges, but on the return spring slots as well.  That was
several years ago and the piano is still working just fine in a Cathedral.

Dick Beaton RPT Helena MT

----------
> From: Maxpiano@aol.com
> To: pianotech@byu.edu
> Subject: Verdigris
> Date: Saturday, February 15, 1997 2:12 PM
>
> List -
>
> If I am asking a question that was handled in posts before I joined
several
> months ago, be kind enought to point me to the proper archives.
>
> My experience has been that solvents and even repinning provide no
permanent
> cure for verdigris because of a chemical present in the bushing.  If I
were
> dealing with a Steinway, I would replace the parts wholesale.  The
instrument
> in question is a fine old Laffargue upright that I have treated on two
> occasions with flange shrinking solution, and the wippen and jack flanges
are
> still very sluggish.  Closer inspection on the last visit showed
verdigris in
> the jack flanges, but I could not detect any in the wippen/tongue
flanges.
>
> My proposal, which the customer has accepted, is to rebush the jack
flanges,
> and repin the wippen and tongue flanges.  (The hammer centers have freed
up
> acceptably).  My question is, with new bushings, is there enough of the
ph
> imbalance in the surrounding material (or dragged by the pin through the
eye)
> to cause a return of the problem down the road?
>
> Bill Maxim, RPT