rim laminations

[Delwin D Fandrich]

----- Original Message -----
From: "Ron Nossaman" <RNossaman@KSCABLE.com>
To: <pianotech@ptg.org>
Sent: October 03, 2001 5:58 AM
Subject: Re: rim laminations


> >The question in my mind is just what degree of stiffness is
> >necessary.  Suppose we have 50/50 horizontal/vertical grain in a 50 mm
> >inner rim, braced, and tightly glued to a 35 mm. outer rim, further made
> >rigid by the attachment of the string plate, is the difference in
impedance
> >(I use the word loosely because I admit I could not define it tightly)
> >between such a structure and a structure composed entirely of horizontal
> >layers of maple, ash etc. going to be detectable even to scientific
> >measuring methods, let alone to the bare ear?
>
> With decent hardwoods and adequate bracing.....
>

Now there you go--getting picky again!

Del