3 Questions, was: Piano Warrenty/False Beats

[Farrell]

See comments below:

Terry Farrell
Piano Tuning & Service
Tampa, Florida
mfarrel2@tampabay.rr.com

----- Original Message -----
From: "Delwin D Fandrich" <pianobuilders@olynet.com>
To: <pianotech@ptg.org>
Sent: Wednesday, January 17, 2001 10:30 AM
Subject: Re: 3 Questions, was: Piano Warrenty/False Beats


>
> ----- Original Message -----
> From: "Farrell" <mfarrel2@tampabay.rr.com>
> To: <pianotech@ptg.org>
> Sent: January 17, 2001 4:50 AM
> Subject: 3 Questions, was: Piano Warrenty/False Beats
>
>
> > Hi Jon. I have a couple of questions regarding your post.
> >
> > "...Delignit pin block.....the bridge looked great, just like I put it
> in."
> >
> > Interesting, especially in light of Del's recent comment about
> horizontally
> > laminated bridge caps. I would wonder about the potential impact of a
glue
> > layer being exposed right at the string side of a bridge pin - so that
the
> > string is laying on hard glue, rather than beech or maple. Could this
> cause
> > a buzz??? Don't tell me Samick has been at the forefront of piano design
> > since the beginning!
> -------------------------------------------------------------
>
> Hi Terry,
>
> I have a couple of questions regarding your post.
>
> Why should there be a glue layer exposed right at the string side of the
> bridge pin? I'm assuming you're concern is based on the practice of making
> the bridges over-height and then planing them down in the piano after the
> plate has been set. There is really no good reason to do this in
production.
> The easiest -- and best -- way around the problem is to use vertical hitch
> pins and fixed-height bridges. The next-best would be to set bearing -- as
> it is done in more than a few European pianos -- by the use of a spacer of
> some sort that rests on the plate hitch panel between the hitches and the
> bridge that can be planed or sanded to height after the plate has been
> installed and bolted down. Typically these are made of some hard wood or
> some very hard felt. A much more logical method than those common to the
> U.S.

Yes, Oops. I am not familiar with production techniques. Yes, I was assuming
that the bridge would be planed down to the proper height for desired
bearing.

>
> Second, even if there were a glue layer exposed right at the string side
of
> the bridge pin, why would this cause a buzz? The glued used to laminate
> material suitable for bridge caps is typically a resorcinol resin
adhesive.
> I can't see it buzzing under any circumstances.

OK. I was just wondering. I figured they use maple for some reason other
than plastic.
>
> Third, if Samick has been using laminated bridge caps, then, yes, they
have
> been at the forefront of piano design -- well, at least in this one area
> they have.

See that! See watcha learn! I figured they went to the dump, picked out some
of that Sitka Spruce & Douglas Fir plywood that had been used for concrete
molds for building buildings & bridges and made bridge capse out of it.

>
> Del
>
>