Upright Wippen Rebuilding Questions

[gordon stelter]

O.K. But we've all, seen what tallow/graphite does to
rep spings, right?
    T

--- Kerry Cooper <brispiano@optushome.com.au> wrote:
> Terry,
> 
> I use animal glue (unprepared hide glue) to glue all
> felt and leather. As
> Gordon has said, hide glue is effected by humidity,
> it is advantagiuos to
> use a glue that is more stable for wood joints.
> However I am a big believer
> in using animal glue because when used at the right
> consistency it does not
> soak into felt, dry quickly, lasts the life of the
> felt
> and can be easly removed when next time the piano
> has to be
> rebuilt/repaired.
> 
> As for mutton fat, the true mutton fat does not have
> any salt, or acids that
> can harm metals. True mutton fat is obtained by
> rendering down the fat from
> around the kidneys of a sheep, the best fat comes
> from prize winning rams.
> 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. Mutton fat is or should never be
> used on centrepins. If
> copious amounts of mutton fat is applied to metal
> parts, then you will get
> side affects. The more use of unnatural man made
> products in every day life
> can cause problems in the future.
> 
> Kerry
> 
> ----- Original Message -----
> From: "Farrell" <mfarrel2@tampabay.rr.com>
> To: "Pianotech" <pianotech@ptg.org>
> Sent: Thursday, March 20, 2003 12:25 AM
> Subject: Re: Upright Wippen Rebuilding Questions
> 
> 
> > Thanks for the input Kerry. A couple comments.
> >
> > Regarding hide or Titebond. I know this has been
> gone over a billion
> times, but on this action several jack flanges had
> been repaired with yellow
> wood glue. The original hide glue came off
> effortlessly with a little water
> action - wippens cleaned up perfectly. The wippens
> that had yellow glue
> applied (of course I don't know exactly what it was)
> did soften, but
> required a fair bit of scraping to thoroughly clean
> it. I just delight in
> how easy hide glue is removed.
> >
> > Mutton fat! Yikes! Where on earth would I find
> that? And is that something
> that will not affect the action cloth on the damper
> lever, and is that
> something that can be expected to last for many
> decades?
> >
> > Terry Farrell
> >
> > ----- Original Message -----
> > From: "Kerry Cooper" <brispiano@optushome.com.au>
> > To: "Pianotech" <pianotech@ptg.org>
> > Sent: Wednesday, March 19, 2003 8:46 AM
> > Subject: Re: Upright Wippen Rebuilding Questions
> >
> >
> > >
> > >
> > >
> > > >
> > > > I will be installing new jacks and attached
> flanges. Is it best to
> simply
> > > apply hide glue, stick together and let dry? Or
> are their any
> significant
> > > secrets to the process?
> > >
> > > You can use hide glue or Tite-bond.
> > >
> > > > I will be replacing heel/capstan action cloth.
> Is hide glue applied
> over
> > > the entire cloth/wood surface? Or is it just
> applied at the forward and
> back
> > > ends of the action cloth so that there is no
> glue between the cloth and
> > > wooden wippen heel?
> > >
> > > Glue is applied only to forward and back ends
> only. This stops any
> future
> > > noise that might arise due to glue soaking into
> the Box/action cloth.
> > >
> > > > The spoons are tarnished a bit. I would rather
> not replace if I can
> make
> > > like new easily. I can simply give them a second
> or two on the buffing
> wheel
> > > and they will be shiny as ever - but what about
> the surface metal left -
> > > will it corrode faster than a new spoon? Can I
> coat the buffed spoon
> with
> > > Emrlon (or something like that - thought I had
> seen it in Schaff catalog
> for
> > > coating capstans - couldn't find it again) or
> something else?
> > >
> > > Buff spoons, and light coat of mutton fat. Just
> a smear to protect from
> air.
> > >
> > > Kerry
> > >
> > > _______________________________________________
> > > pianotech list info:
> https://www.moypiano.com/resources/#archives
> > _______________________________________________
> > pianotech list info:
> https://www.moypiano.com/resources/#archives
> 
> _______________________________________________
> pianotech list info:
https://www.moypiano.com/resources/#archives


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