[pianotech] Diaphragmizing

[V T]

Hi David,

Darrell Fandrich used to do that on some of his pianos. Perhaps, he would
share some of his experience and knowledge.

Vladan

>Can anyone speak to the history, philosophy, current  practice and general
>effect in different parts of the piano of thinning soundboards around the
>edges also known as diaphragmizing?  
>
>David Love