CLP and Styran

[Jonathan Finger]

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As someone else mentioned, you have to be very careful using this
technique.  I=92m sorry if I didn=92t mention this earlier.

=20

When using such a device, I would not let it touch for more than =BD a
second or so.  You don=92t want to heat up the pin enough that you do
damage to the birdseye (of course).

=20

And I might have also prefaced with the fact that I like to =93fix =
things
right=94.   So given the time, I would always like to fix the problem,
rather than mask it.

=20

=20

Jonathan Finger RPT

=20

=20

=20

-----Original Message-----
From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On
Behalf Of Greg Newell
Sent: Saturday, January 25, 2003 4:27 PM
To: Pianotech
Subject: RE: CLP and Styran

=20

Jonathan,
        I can accept that this is effective for the bushing cloth around
a center pin but what does it do to the bridseye?

Greg Newell



At 01:32 PM 1/25/2003, you wrote:




Dave, we used to use in the shop what we called the lazer tool

=20

If youd like Ill try to find the plans for it (or someone else might
already have some)

Basically, it is a pair of tweezers with low voltage running through
them.  You pinchthe tweezers over the ends of the pin, and vuala!  Youve
loosened it.  The current through the pin causes it to heat up, and
thereby presses the felt inside, almost like ironing it. =20

=20

I know I know, it has nothing to do with lasers, but thats just what we
called it!  (because of the hum it created)

=20

But I tell ya, I never have had the effects wear off (seems to be
stable), and Ive found no better way short or repining everything to fix
a whole batch of tight pins.

=20

Anybody else with such experience?

=20

Jonathan Finger  RPT.

=20

=20

-----Original Message-----
From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On
Behalf Of Piannaman@aol.com
Sent: Friday, January 24, 2003 10:05 PM
To: pianotech@ptg.org
Subject: CLP and Styran

=20

Ladies and gents,=20

I went out on a service call last week to deal with a rental piano that
had sticky keys.  It was a Kawai console that was in a room
approximately six feet from an open window.  It IS January, and even
though this is California, there was a substantial amount of cool, damp
air blowing in from outside.  After a brief and kindly lecture about the
evils of drafts and temperature/humidity fluctuation, I set to work.=20

There were many sticking keys and sluggish hammers.  It was tight
centers, so I figured, hey, CLP will do the trick.  I was wrong.  For
whatever reason, there was no noticeable improvement in the
sluggishness. I assume that none of the excess fluid gets absorbed by
the plastic as it might get absorbed by wood.  Anybody know for sure?=20

I reamed a few flange bushings and replaced some corroded pins and the
situation was resolved, but a less time-consuming solution would be
desirable..  Anybody got an answer, and/or a lubricant that might work
with Styran?  =20

Dave Stahl

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