Klarinet Archive - Posting 000082.txt from 2010/08
From: Jennifer Jones <helen.jennifer@-----.com> Subj: Re: [kl] What is "undercutting" (referred to the clarinet bore)? Date: Fri, 13 Aug 2010 06:32:29 -0400
Undercutting is used to raise pitch and adjust the voicing of the tone
holes. It can reduce stuffiness of a note. It involves beveling the
inner edge, still keeping sharp inner edges so that the clarinet still
responds readily (reference 3 below).
I searched the Klarinet archives for information on undercutting of
tone holes. I found the posts noted below. There are a lot of posts
addressing this topic. Number 3 addresses undercutting most directly.
1) http://test.woodwind.org/Databases/lookup.php/Klarinet/1999/11/000844.txt
mentions that undercutting can reduce stuffiness of a note, but that
it tends to increase water accumulation in the left hand C# tone hole.
2) http://test.woodwind.org/Databases/lookup.php/Klarinet/1998/07/000825.txt
you can detect undercutting by looking down the bore of your clarinet.
3) http://test.woodwind.org/Databases/lookup.php/Klarinet/2001/12/000029.txt
nice note on tone hole shape, but the link to the Clark Fobes' article
no longer works.
Instead, use this:
http://www.clarkwfobes.com/articles/TuningtheClarinetforPS.htm
which has a description of undercutting.
4) http://test.woodwind.org/Databases/lookup.php/Klarinet/1999/05/000936.txt
discusses tone hole diameter and undercutting in the context of bore
vs. tone hole dominance
There is a bit in the Fobes article below that is unclear about what
he does with factory undercut and unadjusted clarinets, otherwise the
section on raising pitch makes sense to me.
-Jennifer Jones
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