[pianotech] Wegman, we have a problem

Patrick C. Poulson pcpoulson at sbcglobal.net
Thu Sep 2 14:08:07 MDT 2010


Steve: In retrospect, that might have been the best way to go - but " a lot of extra work" seems like an understatement, at best. 
Patrick
  ----- Original Message ----- 
  From: Stephen Grattan 
  To: pianotech at ptg.org 
  Sent: Thursday, September 02, 2010 12:58 PM
  Subject: Re: [pianotech] Wegman, we have a problem


  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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