Tuning Pin Bushings

[Joseph Garrett]

Bob,
After the bushings have become "water-logged", they're ready to use. I
usually put six on a paper towel while I'm  rough measuring the wire.
That's sufficient time for the paper towel to soak up a major amount of the
excess S.R. Then I drive them into the plate and start stringing. When two
strings are on, I pull out six more. That's the sequence. BTW, I use
hemostats to get the bushings out of the S.R. Since it has Xzylol in it, I
don't want to handle them. I pick up the bushings, from the paper towel
with the Plate Bushing Punch, which is a snug fit. Drive them home with the
sledge and go for it. There will be a slight amount of S.R. that "squirts",
so were eye protection! Wipe up with paper towel. The slight amount of
PinDriving fluid that the bushing has soaked up, will allow the bushing to
"set up" around the tuning pin and retain a tight fit. Once the bushings
are in, I do swab the appropriate hole with Pin Driving Fluid, as well,
that way the pin block has a nice coating in the hole. Got it?

Joe Garrett, R.P.T. (Oregon)
Captain, Tool Police
Squares R I



> [Original Message]
> From: Bob Hull <hullfam5 at yahoo.com>
> To: <joegarrett at earthlink.net>; Pianotech List <pianotech at ptg.org>
> Date: 5/16/06 6:05:54 AM
> Subject: Re: Tuning Pin Bushings
>
> Joe,
>
> Where is this "Synthetic Reducer" available?  
> Do you let the bushings dry first before inserting?
>
> Thanks, 
>
> Bob
>
> --- Joseph Garrett <joegarrett at earthlink.net> wrote:
>
> > On a grand I'm rebuilding the old tuning pin
> > bushings
> > were .41 od but I am unable to find a new set that
> > is
> > anything smaller than about .44 od.
> > 
> > Would you just not put in bushings on this one, or
> > do
> > you have a quick method of reducing the size of the
> > bigger bushings?
> > 
> > 
> > Just soak them in a mixture of Synthetic Reducer and
> > pin driving fluid, until they sink to the bottom of
> > the container. This makes them very pliable and also
> > makes them impervious to splitting. Also, they will
> > not lose their "grip" on the tuning pin. Been doing
> > it for years. Oh, mix 50:1, (That's 50 parts S.R. &
> > 1 part pindriving fluid.
> > 
> > 
> > Joe Garrett, R.P.T. (Oregon)
> > Captain, Tool Police
> > Squares R I
>
>
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