CLP and Styran

[Jonathan Finger]

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

 

If you'd like I'll 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 "pinch" the tweezers over the ends of the pin, and vuala!
You've loosened it.  The current through the pin causes it to heat up,
and thereby presses the felt inside, almost like ironing it.  

 

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

 

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

 

Anybody else with such experience?

 

Jonathan Finger  RPT.

 

 

-----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

 

Ladies and gents, 

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. 

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? 

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?   

Dave Stahl


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