[pianotech] Wegman, we have a problem

Stephen Grattan lostchordclinic at ameritech.net
Thu Sep 2 13:58:46 MDT 2010


Hi Patrick,

I rebuilt one that was missing a half dozen pins so I broke the case down, 
fabricated and installed a delignet block, drilled out the plate, installed 
tuning pin bushings (1/2" thick plate) and 2/0 pins.  Great piano - but a lot of 
extra work!

 
Steve Grattan
Lost Chord Clinic




________________________________
From: Patrick C. Poulson <pcpoulson at sbcglobal.net>
To: pianotech at ptg.org
Sent: Thu, September 2, 2010 3:24:09 PM
Subject: [pianotech] Wegman, we have a problem

 
Hello all:
I am restringing the Wegman upright that I  spoke about in an earlier email. The 
problem is that I am finding that some of  the tuning pins no longer have enough 
friction to hold to pitch. The piano uses  .284 diameter 1 1/2" unthreaded pins 
that go in to a slighter oval hole in the  plate (there is no pinblock), and 
create sufficient friction by the pressure  against the narrow end of the oval 
hole. Usually, that is. Many pins in the  tenor and bass sections slip. These 
are the options that I can think of this  point:
1. Use epoxy or CA to tighten the hole, as in a wooden  pinblock.
2. Use a shortened standard, i.e. threaded,  3/0  tuning pin . This would 
require cutting or grinding a number of these down to  the correct length.
 
Anybody run into this problem, and found a workable  solution?
Thanks
Patrick C. Poulson
Registered Piano  Technician
530-265-1983
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