contamination problems

[Dean May]

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I've encountered the same problem on a small Samick w/PianoDisc. I think =
I repined every jack and hammer center on that piano, and I got Samick =
to pay for it. The customer lives 60 miles away and I think has fallen =
on hard times. So I haven't seen the piano for about 4 years. Not sure =
if it is experiencing any more stickiness or not.
=20
Dean
=20
Dean May             cell 812.239.3359
PianoRebuilders.com   812.235.5272
Terre Haute IN  47802
=20
-----Original Message-----
From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org]On =
Behalf Of Piannaman@aol.com
Sent: Thursday, April 01, 2004 9:48 AM
To: pianotech@ptg.org
Subject: contamination problems
=20
List,=20

My piano's been playing funny lately, ever since I put teflon powder on =
the backchecks...=20

April Fool's!=20

But seriously, I have been dealing with graphite contamination in center =
pins lately.  I've been "tuning" for a client for a year or so, but =
tuning is only a small part of my half-day visits.  Most of the =
appointment time is spent repinning flanges in this new fairly Samick =
150 grand with PianoDisc.  To date, I've probably repinned 50 assorted =
whippen(sp.:-), hammer, jack, and balancier centers, and even one damper =
flange(frozen solid, hanging damper).  =20

The upside is that I've gotten really fast and efficient at doing this.  =
The downside is getting phone calls the day before my big party, =
complaining of "sticky notes,"  and the associated emergency appointment =
at 8:00 on Saturday morning.=20

A few days ago, I got a call from a dealer I contract for.  He =
complained of sluggishness in a Seiler 180 grand.  I figured that it =
just needed key easing, as have several of the ones I've worked on.  =
Instead, I found that the keys were fine for the most part, but the =
hammer centers on many of the notes, particularly in the middle of the =
piano, were really tight.  I found graphite on the pins that I replaced. =
 I fear that this piano with Renner action will go the way of the =
Samick.  Interestingly, though, only the hammer centers in the Seiler =
are binding.  I'm hoping that the whippen and damper centers are free of =
the gunk, but I'm not holding my breath.=20

I know I should do a blanket replacement of all pins, but it's up to the =
owners to figure out how to pay for it.  =20

Similar experiences, recommendations or suggestions are welcome=20

Dave Stahl

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