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 Problems in the barrel joint
Author: clarinet requinto 
Date:   2005-10-30 07:12

I have a Eb rosewood patricola , I can´t disassemble the barrel of the rest of clarinet , yesterday I practiced 2 hours with the band , after I could not disassemble . Some days it is to me difficult to assemble this joint , coverall in the last millimetres. I am from Valencia Spain normally the weather is dry but yesterday it was more wet and warm (86 % humidity and 22 º C ) than the last week . Normally 40% - 60% humidity .

I am worried, anyone has some idea to help me.
1 How it could disassemble ? I am afraid to break some key or crack the wood
2 Would have to take it to a repairmen so that it adjust the joint and to avoid that it returns to happen ?

Sorry , for my bad English
Thanks you .

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 Re: Problems in the barrel joint
Author: tictactux 2017
Date:   2005-10-30 08:00

Given the value of your instrument, I wouldn't do it myself but take it to a repair person. He/she will determine whether the sticking is due to too thick a cork or if the barrel opening is too small or the tenon too big.

In the meantime, let your instrument dry (on a clarinet stand or equivalent). After some hours you should be able to disassemble it.
Then be sure to properly grease the corks before reassembling, maybe even greasing the barrel opening a bit, just to impregnate it and to prevent it from swelling when wet. And do see your shop technician.

--
Ben

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 Re: Problems in the barrel joint
Author: Chris P 
Date:   2005-10-30 15:27

Try rocking the barrel and body a little (not too much) while pulling and twisting at the same time - this should shift it.

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 Re: Problems in the barrel joint
Author: Dominic 
Date:   2005-10-30 16:19

I have the same problem with my Selmer Eb! As tictactux suggested, ensure to grease the cork before playing. And let it rest (to cool down) for a while after playing it.

Cheers!

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 Re: Problems in the barrel joint
Author: hans 
Date:   2005-10-30 16:51

clarinet requinto,
You could do a search for Gordon (NZ)'s posts on this topic). I vaguely recall that he gave instructions on fixing this problem.
My Selmer Recital did this to me about 10 years ago. The repair technician disassembled the joint and replaced the cork and it has been perfect ever since.
Good luck,
Hans

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 Re: Problems in the barrel joint
Author: Alseg 
Date:   2005-10-30 17:01

Please be careful. Rosewood is fragile. Rosewood is more subject to changes in humidity and temperature than Granadilla. Size changes more dramatically with playing. Sealants can prevent some-but not all- of this, but they break down over time.

Let it cool down slowly and in lower humidity.

Once apart, a tech can enlarge the socket, reduce the cork, etc.

But note: if the barrel is loose, squeaks can occur. This is due to pressure release from the upper bore above the register key.

Better to be a little looser...and use teflon plumbers tape to make up the difference.

Did you recently oil the barrel? If so, the wrong oil can also cause tightness.


Former creator of CUSTOM CLARINET TUNING BARRELS by DR. ALLAN SEGAL
-Where the Sound Matters Most(tm)-





Post Edited (2005-10-30 17:01)

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 Re: Problems in the barrel joint
Author: tictactux 2017
Date:   2005-10-30 18:47

> Try rocking the barrel and body a little (not too much) while pulling and
> twisting at the same time - this should shift it.

My recorder teacher (duh, must be 30+ years now) taught me to treat the joints as if they had a screw thread, ie never push nor pull but always screw and unscrew the two parts, preferrably in the same direction as the cork was wound around the tenon (counterclockwise in my setups), as this is gentler to the glued overlap and will ever so slightly compress the "cork coil" which makes the whole operation even easier. Of course, the link mechanism should allow for screwing, I gather this is not always the case.

Remember school? Those physics lessons where you should've learned that static friction is a magnitude bigger than sliding friction? Here you see a very practical implementation of that principle...

"Screw that instrument", but in a strictly mechanical sense. ;-)

--
Ben

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 Re: Problems in the barrel joint
Author: Gordon (NZ) 
Date:   2005-10-30 19:18

I have never had a stuck joint that did not come apart.

Approach 1.
Get a person with STRONG hands/arms (eg repair technician :-), to twist it apart. This very rarely fails. (If this person is not a technician, explain to them how to look after the keys in the process.)

Approach 2, usually necessary only on jammed instruments that have not been disassembled for decades, and the old grease or cork resins have 'glued' the joint together.

a. Hold the barrel and body and 'bend' the clarinet at the junction, as if you were trying to break it in half. This will produce a tiny gap on the 'stretched' side. Insert any shim or knife edge, razor blade, etc, that will fit in, and leave it there.
b. Now bend the instrument the opposite way. This time you will be able to insert something a little thicker in the gap on the opposite side.

Keep repeating the process, on these opposite sides, inserting thicker and thicker material, until the joint is free.

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 Re: Problems in the barrel joint
Author: ghuba 
Date:   2005-10-30 20:00

Alseg wrote:

>
> Did you recently oil the barrel? If so, the wrong oil can also
> cause tightness.
>

>
> Post Edited (2005-10-30 17:01)

Can you clarify this point? What is the "wrong oil" that would cause tightness?

George



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 Re: Problems in the barrel joint
Author: clarinet requinto 
Date:   2005-10-30 20:49

Tanhks you very much for your commentaries .
Just now , I have been able to disassemble it .
This week I will visit a repairmen .
I note that the metallic ring of the barrel ( near the clarinet joint ) ; the metal exceeds the wood, the wood is engulf . It is possible that this increases the problem .

Thanks you

Regards

Revert Boix Álvaro



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 Re: Problems in the barrel joint
Author: Alseg 
Date:   2005-10-30 21:37

>Did you recently oil the barrel? If so, the wrong oil can also
> cause tightness.

>>Can you clarify this point? What is the "wrong oil" that would cause tightness?<<

Sure........Petroleum products.... wrong
Specific purpose natural wood oils...right
read the info on http://www.doctorsprod.com/ by Dr. Omar
Henderson who posts on this board and is a sponsor.


Former creator of CUSTOM CLARINET TUNING BARRELS by DR. ALLAN SEGAL
-Where the Sound Matters Most(tm)-





Post Edited (2005-10-30 23:17)

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