Undercut bridges

Delwin D Fandrich pianobuilders@olynet.com
Tue, 15 Jul 2003 14:29:38 -0700


----- Original Message -----
From: <A440A@aol.com>
To: <pianotech@ptg.org>
Sent: July 15, 2003 1:54 PM
Subject: Re: Undercut bridges


>
> Well, this one is easy!  The wedges were pine, 3/4" wide, long enough
taper
> to just reach the back side of the cut-out, pushed in firmly by hand in
the
> center of each cut-out.  The glue joints all appeared to be tight on the
ribs,
> bridges, dowels.  The soundboard was uncracked and had a normal amount of
crown
> everywhere except the 5th octave, where it was approx. 1/2 as much as the
> octave below, (again, a somewhat normal set-up).
>
>    All that aside, it is easy enough to find out for yourself.  simply
cut
> some wedges and stuff them under the cutouts in a Steinway bridge.
Listen
> before and after and make up your own mind based on your own
observations.  The
> test is easy, reversable, and totally impervious to outside influence!
> Regards,
> Ed Foote RPT


Next time one comes along I'll do that.

Del



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