Klarinet Archive - Posting 000075.txt from 1996/12

From: CLARK FOBES <reedman@-----.COM>
Subj: Clarinet Barrel adjustment
Date: Tue, 3 Dec 1996 14:11:11 -0500

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Oops!!

Dave I am afraid this time you gave some incorrect advice. I almost

always work on the barrel tenon to carrect binding problems. Generally
what is happening in this case is that the wood of the receiver has
swelled and the ring is forcing it in one direction. Consequently the
barrel receiver (socket) is too small just at the ring. I NEVER use
reamers to adjust sockets.

Also you must determine if in fact this is where the parts are
binding. Here is a good way to check. Clean the tenon off with a bit of

alcohol on a rag. Be sure to remove any cork grease and dirt. Do the
same with the barrel socket. Now lightly sand the inside of the barrel
socket with 600 sandpaper. This merely takes the smooth finish off.

Place the barrel on the tenon. As you are working it on slowly try
to notice if the it is catching immediately or after it is most of the
way on. Once it is on completely give it a couple of good twists and
then take it off. If you look into the socket you will see shiny spots
where the barrel is tight.

Usually it is catching under the ring. Sand this as evenly as
possible with fine emery cloth by simply rotating the barrel in your
left hand while pressing the cloth firmly with your right thumb.
(Reverse if you are left handed). Use 3 o 4 turns at the most to start.

This will not be enough, but it will give you an idea of how fast the
emery cloth cuts. Try the barrel again. You will probably still see
thos shiny marks. If it appears that the socket is also binding near
the inside end fold the cloth so that it makes an abrupt edeg and work
on this area too being careful not to elongate the socket.

I would work this way with the emery cloth until it is still
catching slightly and then finish out the socket with 320 and 600.

The reason for not working on the tenons if possible is that if you

round those nice sharp corners too much the joints will begin to
"rock".

Clark W Fobes