[pianotech] Managing agraffes was Increasing bridge height

pianoguru at cox.net pianoguru at cox.net
Wed Mar 25 19:09:49 PDT 2009


---- Jude Reveley/Absolute Piano <juderev at verizon.net> wrote: 
>.....
>serve as a prophylactic against any potential rattling.

Or maybe a shock absorber to rob some of the energy from the string.  A rigid terminus would certainly be better.

Aside from the thread lock, I have seem loose agraffes, especially in the bass bichords, rotating out of alignment that would define equal speaking lengths.  Quite often the strings change direction toward their respective tuning pins enough that the string tension will rotate the agraffe to find its best balance between the sideways string pressures.

Frank Emerson



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