Upright Wippen & Mutton fat

[Isaac OLEG]

Hello,

You will eventually notice some old German pianos where the pinning
have been shot with Ballistol, more than once sometime, then repinning
is a dream ! (I mean a nightmare)
The residue left does not allow for a decent pinning, and often dirt
and dust is gathered in the bushing. Replacement seem the better way
(or a good efficient method to change all the bushings in a few
minutes ...)

Best regards.



Isaac OLEG

Entretien et réparation de pianos.

PianoTech
17 rue de Choisy
94400 VITRY sur SEINE
FRANCE
tel : 033 01 47 18 06 98
fax : 033 01 47 18 06 90
cell: 06 60 42 58 77

> -----Message d'origine-----
> De : pianotech-bounces@ptg.org
> [mailto:pianotech-bounces@ptg.org]De la
> part de Kerry Cooper
> Envoyé : jeudi 20 mars 2003 01:41
> À : Pianotech
> Objet : Re: Upright Wippen & Mutton fat
>
>
> Phil,
> In our part of the world, Brisbane Australia, we see
> verdigris on nearly all
> piano makes. During the 50-60's, English piano makers did
> what they called
> Tropicalised their piano being sent to Australia. To do
> this, they used
> nickel plated centre pins and tinned or galvanised piano
> wire. The strings
> did not rust and the centre pins did not get as much
> verdigris on them (only
> on the cut ends where the brass was exposed to the
> environment). The old
> German pianos of the early 1900's have a big problem if
> they have been left
> sit unplayed for a number of years. We even get this on 20
> - 30 year old
> Yamaha & Kawai piano, especially grey market ones.
>
> Kerry
> ----- Original Message -----
> From: "Phil Frankenberg" <rinkyd@pacbell.net>
> To: "Pianotech" <pianotech@ptg.org>
> Sent: Thursday, March 20, 2003 10:12 AM
> Subject: Re: Upright Wippen & Mutton fat
>
>
> > Kerry
> > You state "Verdigris on centrepins does not come from
> mutton fat, it is a
> > natural effect of brass that has been polished by the
> felt bushing and
> then
> > let sit in a humid climate". In my experience I have
> never seen verdigris
> on
> > any piano other than Steinway, though I have seen many
> pianos that sat in
> a
> > humid climate for long periods that did not have
> verdigris. It seems to me
> > there must be another factor here. I really don't know if
> it's sheep
> tallow,
> > I was told it was some 25 yrs ago ,but nothing to back it
> up. Why does
> this
> > seem to be at least mostly a Steinway phenonenon?
> > Thanks
> >
> > Phil Frankenberg
> >
>
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