Foundry Castings

[Greg Newell]

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Del,
         What are you considering as an alternative? Inquiring minds want 
to know!!

Greg Newell


At 02:16 PM 8/27/2002, you wrote:
>And If I haven't created enough confusion yet, I'll toss out another one:
>
>Just why do we think gray iron is the best of all possible materials to 
>use for piano plates anyway? What is it about gray iron that is so special?
>
>We say it is extremely rigid -- but it is not. It's brittle. Is this an 
>advantage?
>
>We say it has excellent internal damping characteristics -- but is this an 
>advantage? Why?
>
>Right off hand I can think of only two characteristics that make it a 
>particularly good choice for piano plates: [1] It is easy to machine and 
>[2] it is cheap. Neither of these has anything to do with its performance 
>in the piano.
>
>Del
>
>
>

Greg Newell
mailto:gnewell@ameritech.net
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