staples in hammers

[Elian Degen J.]

Hi Don

Staples are still of help over here in Venezuela, specially in old pianos, I
have seen more than a piano without staples where hammer felt pops up due to
the tropical humid weather, and many a stapled set which after a time you
can observe how what is still holding it in place is the staple.

New glues are still to be watched over time. Many very old pianos, which
where ordered for tropical weather still have the wire (pre-staple ones) as
they were ordered for tropical weather straight to the factory

Elian


----- Original Message -----
From: "Don" <pianotuna@accesscomm.ca>
To: <pianotech@ptg.org>
Sent: Friday, September 06, 2002 18:47
Subject: Re: staples in hammers


> Hi Jack,
>
> The staple weighs 0.11 grams. With a 5 to 1 ratio, not accounting for
> friction that means 0.55 grams at the key, with friction probably more
than
> that.
>
> Staples are a hold over from the days when adhesives were not adequate to
> hold the felt in place. They are essentially cosmetic. I believe the
> originals were really a wire tie that looped (i.e. one single wire which
> was fastened by twisting and bending it over).
>
> At 02:31 PM 9/6/02 -0700, you wrote:
> >
> >    thanks Jack
>
> 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/
>
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