Klarinet Archive - Posting 000092.txt from 2000/03

From: alevin@-----. Levin)
Subj: Re: [kl] Ligatures in general&"Science"
Date: Fri, 3 Mar 2000 02:20:58 -0500

Walter:

I think that you have to consider changes over time. Moderate pressure
over some months may do more than a vise in a few moments. Possibly
mouthpiece material has improved to the point where it is no longer a
problem?Or, possibly the examples I saw had other problems not perceived by
the lecturer.
aLLEN

At 11:27 AM 3/2/00 EST, you wrote:
>OK. Been listening to this thread.
>
>Designed a simple experiment.
>
>Took an old hard rubber mouthpiece. Measured the bore at the exit point.
14.92 mm
>
>Put on a reed and a ligature. Cranked the ligature down as hard as I
could. Measured the exit bore. 14.92 mm
>
>Took off reed, put mouthpiece in bench vise, where ligature would tighten.
Cranked vise tight, using maximum hand strength, Measured exit bore 14.92 mm.
>
>Put the tenon of the mouthpiece between the jaws of the vise. Cranked down
hard. Measured 14.92.
>
>Cranked down harder. Cracked the tenon, threw out mouthpiece.
>
>My conclusion.....unless you have a 10 pound ligature, with screws that
could be used to hold down an elephant, you are NOT going to change the
dimensions of your mouthpiece.
>
>Frankly, the material is far to dense and stubborn. Also, in a cross
section, the mouthpiece is circular. I would submit that compressing a
cirle, with pressure coming from all sides is not going to be an easy process.
>
>Now.....
>
>How does "cranking" down the ligature affect the reed. The reed is a
fibrous bundle, containing hollow tubes. Wouldn't it be logical to assume
that most of the compression would take place here?
>
>Depending on the shape of the table, the density of the cane, the amount
of warpage of the reed, AND EXACTLY WHERE and HOW the LIGATURE CONTACTS THE
REED all kinds of strange and wondrous things can happen......from
disastrous to wonderful.
>
>WG
>
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