Klarinet Archive - Posting 001069.txt from 1997/09
From: Dave Lane <davelane@-----.com>
Subj: re:care of instrument
Date: Tue, 23 Sep 1997 19:14:00 -0400
At 08:25 AM 9/22/97 -0500, Roger Garrett wrote:
>cracks are caused in the upper joint because of the pressure of the
>swollen wood when it has been played and left together than for any other
>reason. Cracks usually occur at the top of the upper joint....even if
>there is a metal ring around the top of the tenon of the upper joint.
Not true. The reason most clarinet cracks occur at the top of the top
joint is because of improper warmup before blowing 98 degree air into it.
this causes the inside of the bore to expand while the outside of the
horn, being cold, doesn't. This stress is what causes cracking.
My reference source is an article by Hans Moennig, reprinted years ago in
"The Clarinet". If there is interest, I'll locate it and see if Jim
Gillespie will alow me to reprint it here.