Klarinet Archive - Posting 000487.txt from 2003/01

From: Georg.Kuehner@-----.de (Georg K=?ISO-8859-1?B?/A==?=hner)
Subj: Re: [kl] Reed design using cnc machines
Date: Mon, 27 Jan 2003 02:28:06 -0500

> This is actually what Guy Legere did when designing his reeds. He gave a
> very interesting lecture on this at Clarinetfest 2000. One result of his
> work was discovering that the profile is very similar for both hard and
> soft reeds. The manufacturers do NOT scrape soft reeds thinner, as we do
> when adjusting them, they make them out of less stiff parts of the cane.
> No doubt there are some difference between the profiles used by
> different makers, but within one make the profile was essentially the
> same for different grades. So Legere reeds are made out of different
> composition polymer for the different grades (or maybe the same grade
> with different heat treatments, since you can soften them by heat
> treatment).

I think I=B4ll check this with different reed strenght=B4s by different
manufacurers. Or has anyone of You checked this before?

> So you must add another factor. In addition to shaping the reed
> identically each time, you must set up a cane stiffness selector to be
> sure you are using the same stiffness material. And since it is
> anisotropic (and the lateral stiffness is influential on squeaks) you
> need to measure this both along and across the grain. I have no idea to
> what tolerance you need to measure this.
>=20
> Keith Bowen

The problem a natural Material provides us with the problem of stiffness an=
d
I think I=B4ll get my material from a company in Munich who is specialized in
checking out the stiifness of arundo donax material.

Best Georg

Www.heidelberger-saloniker.de

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