Hardening the capo bar

[Isaac OLEG]

Hello,

I have no specific answer on hardening, only that I was told that even
a very hard metal will be attacked by the strings with time, and then
possibly will provide the usual tuning/rendering problems and noises,
but Ron OVERS say that his process works fine after 5 years of use.

What I've been told to use is a bronze rod from a Beryllium bronze
quality. The bronze is hard enough and a bit self lubricant, it should
be inserted in a place prepared for it on the plate. I thought of
welding it but it is probably unnecessary.

Still waiting for the next opportunity to use it for replacing worn
capo and aliquot rest son the next Steinway (or Bosendorfer).

Best Regards

Isaac OLEG

Entretien et reparation 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 David Love
> Envoye : mercredi 9 avril 2003 09:01
> A : Pianotech
> Objet : Hardening the capo bar
>
>
> What is the basic procedure for hardening the capo bar and
> how deep does
> that hardening generally extend, i.e. how easy is it to
> polish through it?
>
> There have been a couple of mentions recently of the
> hardened inserts used
> in agraffes.  What is that material and how
> difficult/beneficial would it
> be to adhere one of those inserts (a long one obviously) to
> the underside
> of the capo bar in place of the normal hardened "v" bar?  I
> am interested
> as it seems that the capo bar is often compromised,
> especially on older
> Steinways.  I am wondering if an unevenly hardened capo bar
> (or one where
> the hardening has been filed through) will significantly
> compromise the
> tone in that section?  Does hardening the capo provide a
> uniformly hardened
> surface and does that lack of uniformity (if it exists)
> manifest itself in
> tonal differences?
>
>
> David Love
> davidlovepianos@earthlink.net
>
>
>
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