string termination

[Andrew and Rebeca Anderson]

I've seen these too.  It would be a low cost way to have a solid 
termination point.  Who carries these.  I recall it was on a European 
make.  Jurgen, do you have these?  Can they be ordered with standard 
threading to retrofit to American makes?

Andrew
At 11:28 AM 8/14/2005, you wrote:
>Seems like I have agraffes that have a metal rod insert.  A hole is drilled
>through the agraffe such that when the metal rod is inserted it is only
>slightly exposed at the top of each hole.  That puts the string termination
>in contact with the hardened metal rod rather than the brass.
>
>David Love
>davidlovepianos@comcast.net
>
>-----Original Message-----
>From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On Behalf
>Of Ron Nossaman
>Sent: Sunday, August 14, 2005 8:54 AM
>To: Pianotech
>Subject: Re: string termination
>
> > Why then not make a agraffe out of steel or some other harder material?
> > That may be difficult for the one-off small-shop piano builder, but if
> > there were a demand to others..... Why would this be so difficult? Why
> > would brass persist so long?
>
>Cost? Ease of machining?
>
>
> > Why not use other termination types like a capo-type bar in all string
> > sections like you see on cheap old American microgrands? What about
> > something more like an upright pressure bar arrangement?
>
>Actually, it looks to me to be quite possible to retrofit an
>agraffed piano with a termination bar of harder material than the
>brass agraffe, along the agraffe line, with a pressure bar behind,
>screwed into the plate. A cast stepped bar would be ideal for
>matching speaking lengths within the unison, but I'm curious how
>well a curved bar would work. Just how critical are slightly
>mismatched speaking lengths within unisons at those string lengths?
>I'd guess there is some tolerance.
>
>Ron N
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