Re; New Use For Goose's String Leveling Tool/Old News To me

Porritt, David dporritt at mail.smu.edu
Mon Sep 24 09:56:20 MDT 2007


Is that "2 lb. hammer" a typo????? I hope!

 

dp

 

David M. Porritt, RPT

dporritt at smu.edu

 

From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On
Behalf Of Michael Magness
Sent: Monday, September 24, 2007 10:25 AM
To: Pianotech List
Subject: Re; New Use For Goose's String Leveling Tool/Old News To me

 

A friend of mine showed this to me about 15 years ago, Paul Wuske was a
member of the guild, an RPT who resigned last year. He was/is an
excellent technician, rebuilder and teacher. He had seen some film of
one of the asian factories, in it they were using brass drifts or
punches to seat the strings. He adopted this practice for his newly
rebuilt/restrung pianos and eventually for new piano prep and old pianos
when being pitch raised after a several year hiatus between tunings. He
explained that when the pitch rises and falls, which it will in an
uncared for piano, the strings will "hang" on the bridge pins as the
soundboard shrinks back after swelling up over the summer with the high
humidity. If you tune the piano to pitch, quickly, just a rough tune.
Then using a piece of brass, I took a 1/4" diameter piece about 3" long,
I bored a 1/4" hole about 3/4" deep into a 3/4" diameter dowel about 6"
long put a few drops of gel type CA in the hole and placed the brass in
the hole. Using this tool, I use a 2 lb. hammer and place it either side
of the bridge on the string and strike gently(wearing safety glasses).
On old uprights that haven't been tuned for a few years you can actually
see the strings move down the bridge pin! When you are finished you'll
find the piano will be back to 1/2 tone flat(about where you started) or
more but when you begin to tune again you'll find it to be a lot more
stable. It's still going to stretch out of tune somewhat but not nearly
as badly as you're accustomed to. This also works for grands that have
been moved any distance, new grands & new pianos in general, restrung
pianos in addition to those neglected pianos I mentioned above. The
point of the length of the brass is so that it will reach the unwound
wire through the overstring, the small size of brass allows this also
and to get up close to the plate. By using brass there is no damage to
the string, I have not had any strings break doing this but err on the
side of cation by wearing the safety glasses. I do every string in the
piano, bass strings too. 

Another plus to this, some of that "bad wire" and false beats will
disappear on the better pianos.

I also do this to each new string I install, it helps them hold tune
faster and I already have the hammer there anyway for the coil setting.
Another area that's greatly overlooked!  


-- 
Never become so much of an expert that you stop gaining expertise. View
life as a continuous learning experience. 
- Denis Waitley


Michael Magness
Magness Piano Service
608-786-4404
www.IFixPianos.com
email mike at ifixpianos.com 

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