At 12:20 PM 2/22/2003 -0500, you wrote:
>I've heard of this before. Can you elaborate on the nature of these plate
>plugs? How are they placed into position - what is the manufacturing
>steps. Are they in any way part of the block? Are they bonded in place
>somehow? Are they drilled prior to installation? Curious minds...........
Hi Terry,
They have an automated machine that force fits the plugs, the
plug has a centering dimple in the top for a drill guide. The plug and
block is drilled in one operation. The drilling is completely
automated. Marvels of CNC machinery.
With the force fit, and the pin spreading the plug a little, they are in
there tight.
If you have a spare million bucks, you could order a machine for the shop. <G>
Regards Roger
>I've always thought that a neat pin block renewal, when not pulling the
>plate, would be to drill 3/8" holes right through the plate and block (or
>whatever size that would be just slightly bigger than the original plate
>holes) and use 3/8" high quality plugs (same size as hole in plate and
>block - making sure to have a very snug fit). But trim the plugs flush
>with the plate top. That way you would end up with something akin to an
>open faced pinblock with a very hard (iron riddled with maple freckles)
>1/4" or 3/8" top skin. I should think my epoxy addiction might be
>problematic in such a case - better to use Tightbond or something that
>would not bond the wood real strongly to the cast iron plate.
>
>Are the Yamy plugs in there that tightly that they function like my above
>scenario?
>
>----- Original Message -----
>From: "Roger Jolly" <roger.j@sasktel.net>
>To: "Pianotech" <pianotech@ptg.org>
>Sent: Saturday, February 22, 2003 11:31 AM
>Subject: Re: What do I do with Story&Clark/Yamaha 158 grand?
>
>
> > Hi Gordon,
> > CA does not work too well on Yamaha or Kawai's. The
> > plate bushings, are in fact plate plugs. Grain running horizontal, not
> > vertical like North American pianos. Very little glue gets to where it
> > needs to be.
> > To be effective, the piano needs to be flipped upside down, and the CA run
> > in from the bottom of the tuning pin hole. This will yield very good
> > results in most cases.
> > The nice thing about doing it from the bottom, is the repair is invisible.
> > The best solution, is to repin, this age and quality of piano deserves it.
> > Regards Roger
> >
> >
> > At 07:01 AM 2/22/2003 -0800, you wrote:
> > >Cosmetically, though, the piano is quite nice and the
> > >pins have been driven to the point that any wandering
> > >CA between them, on top of the plate, would harden to
> > >a lovely web between plate and wire! Usually I keep
> > >twisted up Kleenex (TM) handy to quickly wick up any
> > >wandering CA, but this does not work well when it gets
> > >beneath low-lying strings. I think I might just flip
> > >this one over and do the 3-bottles-of Pin-Tite over a
> > >weeks period from the block underside. I'd rather use
> > >CA, but in this attitude I fear it might run over the
> > >coils and make a ugly mess! I'm also concerned about
> > >permanently gluing the plate into the piano, so I
> > >don't usually CA nice grands. Not much, anyhow.
> > > Thump
> > >
> > >--- Farrell <mfarrel2@tampabay.rr.com> wrote:
> > > > Well, I must admit that I have never worked on a
> > > > block after it had been CAed. BUT, being that the
> > > > CA just simply solidifies, I can't for the life of
> > > > me imagine that repinning would be affected at all -
> > > > especially if you went up two pin sizes and did a
> > > > little reaming - but again, I have never done that
> > > > (although I would maintain that I would be 99%
> > > > confident that it would not harm anything - and
> > > > hence, the "can't hurt" statement).
> > > >
> > > > Anyone out there ever repinned a previously CAed
> > > > block?
> > > >
> > > > Terry Farrell
> > > >
> > > > ----- Original Message -----
> > > > From: "Clyde Hollinger" <cedel@supernet.com>
> > > > To: "Pianotech" <pianotech@ptg.org>
> > > > Sent: Saturday, February 22, 2003 7:46 AM
> > > > Subject: Re: What do I do with Story&Clark/Yamaha
> > > > 158 grand?
> > > >
> > > >
> > > > > Terry,
> > > > >
> > > > > I was thinking of suggesting the same thing you
> > > > did. CA may fix the
> > > > > problem indefinitely. Since I don't do major
> > > > repairs, however, I am not
> > > > > qualified to answer the question. The one
> > > > apprehension I had was this:
> > > > > Suppose the CA didn't work, and the piano had to
> > > > be repinned anyway.
> > > > > Would the CA have ruined the pinblock to the point
> > > > it would now have to
> > > > > be replaced, rather than just repinned?
> > > > >
> > > > > Regards,
> > > > > Clyde
> > > > >
> > > > > Farrell wrote:
> > > > >
> > > > > > Perhaps a first, most-low-budget, approach would
> > > > be CA. Can't hurt!
> > > > >
> > > > > > > Hi folks!
> > > > > > > This Yamaha built Story&Clark model 158
> > > > grand is
> > > > > > > in a church social hall. The pins have that
> > > > typical
> > > > > > > looseness of Yamahas from the 1960's or 70's,
> > > > which I
> > > > > > > have felt before. The church wants the piano
> > > > fixed,
> > > > > > > but does not have a big budget. The pins have
> > > > been
> > > > > > > driven already.
> > > > >
> > > > > _______________________________________________
> > > > > pianotech list info:
> > > > https://www.moypiano.com/resources/#archives
> > > > _______________________________________________
> > > > pianotech list info:
> > >https://www.moypiano.com/resources/#archives
> > >
> > >
> > >__________________________________________________
> > >Do you Yahoo!?
> > >Yahoo! Tax Center - forms, calculators, tips, more
> > >http://taxes.yahoo.com/
> > >_______________________________________________
> > >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
This PTG archive page provided courtesy of Moy Piano Service, LLC