[pianotech] Interesting find

[Susan Kline]

  On 10/19/2010 9:21 AM, David Love wrote:
> I don't think the wedge will kill sustain, though it might make it 
> softer. Hold a tuning fork on a rigid steel table and it will continue 
> to vibrate for a long time.
It looks like a felt mute, so it probably wouldn't couple the beam and 
the soundboard much. The springs might add stiffness, but the board 
could still vibrate because of their flexibility. (At least, I imagine 
that it could.)

I've been known to resort to measures like this, except I did such stuff 
on pianos much worse off that this one. Open cracks, big noises, no 
money, that kind of short crummy grand.

Haddorff ... I've liked the ones I've seen. Also I have a sense of 
connection because my grandmother, aunts, and cousins lived in Rockford, 
IL where Haddorffs were built. In fact, my uncle's grandfather worked in 
that factory.

Susan Kline
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