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MMD > Archives > April 2012 > 2012.04.20 > 06Prev  Next

Metal for Piano Plates
By John A. Tuttle

Hi All,  As I discovered during my research, 'plates with the best
acoustic qualities are those in which a soft gray iron has been formed
during the casting process.  This soft iron dampens metallic ringing
sounds and hammer noise more than any other type of ferrous metal.

The dampening ability is maximized when the casting cools slowly.  Slow
cooling also produces a soft metal, which significantly reduces string
breakage at the plate termination point.

Piano wire will break prematurely if the termination point is as hard
or harder than the wire.  (from "The Educated Piano", by E. J. McMarrow)

John A Tuttle
Brick, New Jersey, USA

(Message sent Fri 20 Apr 2012, 14:22:28 GMT, from time zone GMT-0400.)

Key Words in Subject:  Metal, Piano, Plates

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