too stiff

[David Love]

Actually it's mutton tallow which is basically rendered lamb fat.

David Love


----- Original Message -----
From: "Tom Servinsky" <tompiano@gate.net>
To: <pianotech@ptg.org>
Sent: September 20, 2001 8:01 PM
Subject: Re: too stiff


> Z,
> It is my understanding that your hypothesis is probably correct: felt was
> impregnated or dipped in Mutton talc ( I think that's the spelling of
> it....).  I had this same conversation with one of the felt manufacturers
> several years ago,  trying to understand why verdigris had the enviorment
to
> grow in the first place.
> According to the manufacturer, it's not simply the felt/brass interaction
as
> it's the additive that the felt was dipped into which caused the problems.
> The additive acted as the catalyst to react with the brass which caused
the
> verdigris.
> Once the practice of impregnating the felt was stopped, so stopped the
> verdigris.
> One last note....with regards to the heat gun, have you ever seriously
given
> the flanges of good heating with the heat gun. Keeping the gun moving you
> can continue to heat the parts to an increasing hot level without burning
> the wood.  I'm not sure if it's the verdigris which has a strong
volatility
> or maybe it's the years of center pin solutions in the flange, but with an
> intense heating of the flanges a blue ploom of smoke will poof up. After
the
> smoke occurs the flanges become extremely free and the verdigris appears
to
> be less noticeable.  My experience with this treatment has demonstrate
rated
> that verdigris can burned off off temporarily ( enough) to have relatively
> predictable flange correction for about a year. Followed by  a dose of
> Protek actions can remain useable.
> Tom Servinsky,RPT
> ----- Original Message -----
> From: "Z! Reinhardt" <diskladame@provide.net>
> To: <pianotech@ptg.org>
> Sent: Thursday, September 20, 2001 10:24 AM
> Subject: Re: too stiff
>
>
> > I suspect that the entire action parts (whippens, shanks/flanges) were
> > dipped into a solution before installing on the rails.  If that is the
> case,
> > I should think when only the bushings are replaced, it is only a matter
of
> > time before that stuff in the wood leaches into the new bushings to
> produce
> > the old problems.
> >
> > Last year I came to a Steinway L that was well loaded with verdigris.
The
> > wood in the action parts didn't feel as dry as I might expect for older,
> > possibly brittle parts.  It was one of those rare days when I had my
heat
> > gun with me, so I removed a hammer, and passed the flange very briefly
in
> > front of the heat gun.  Indeed, it looked wet all over, if only for an
> > instant.  So, I hit it a little harder with the heat, and nothing would
> > evaporate.  Oh well ... but it does explain why replacing just the
> bushings
> > is not a permanent fix.
> >
> > Z! Reinhardt  RPT
> > Ann Arbor  MI
> > diskladame@provide.net
> >
> > ----- Original Message -----
> > From: "David Love" <davidlovepianos@earthlink.net>
> > To: <pianotech@ptg.org>
> > Sent: Wednesday, September 19, 2001 11:23 PM
> > Subject: Re: too stiff
> >
> >
> > Dale:
> >
> > Why wouldn't rebushing work?  The verdigris, in my experience doesn't
> > permeate the wood surrounding it.  The question there is whether or not
it
> > is a practical solution.  My answer has generally been no.
> >
> > David Love
> >
> > ----- Original Message -----
> > From: "Erwinpiano" <Erwinpiano@email.msn.com>
> > To: <pianotech@ptg.org>
> > Sent: September 19, 2001 8:10 PM
> > Subject: Re: too stiff
> >
> >
> > >   Dear List
> > >  Nothing works for verdigris long term. Not protek ,not rebushing, not
> > > shrinking, silicine oil,not mineral oil ,snake oil or 30 weight motor
> oil.
> > > Been down that dead end road. Temporary solutions at best.
> > >
> > >       Dale Erwin
> > >
> >
> >
>