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 cork tenons on historical instruments
Author: jdbassplayer 
Date:   2014-02-02 07:47

Hello all,
Over the years I have purshaced several boxwood clarinets. More recently I was blessed with the oppoturnity to purchace a very old flageolet by Hermann Wrede. Usuially when I restore boxwood instruments I use string for the tenons, but when I restored the flageolet I decided to use cork. At the time I thought it was a great idea but now I am wondering if this will affect the value. Is there a signifficant effect on the value if I use cork instead of string? Could I also use cork my boxwood clarinets without affecting the value?

Thank you in advance for your opinions!

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 Re: cork tenons on historical instruments
Author: clarnibass 
Date:   2014-02-02 10:41

By "value" you mean if you want to sell them? If that's what you mean, then it could affect it if the buyer is someone who is ridiculous enough to think it affects the value, and won't affect the value if the buyer is a more rational person.

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 Re: cork tenons on historical instruments
Author: MichaelW 
Date:   2014-02-02 14:19
Attachment:  Twine.jpg (117k)

But if you mean the „historical” value you should use string (I take- even though it’s not quite historically correct- polyester twine and sometimes find it even more practical than recorking). If you like cork better but somebody wouldn’t, you could easily replace it.

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 Re: cork tenons on historical instruments
Author: Caroline Smale 
Date:   2014-02-03 00:47

One major reason for using fine thread/twine for tenons is that it adds considerably to the strength of the tenon joint compared to cork.
This strength is not needed for blackwood instruments but can be very beneficial when the instrument is made of softer/weaker wood of has thin tenon sections.

Many professional bassoons still use bound tenons for this reason as the maple section is very thin and easily split.

Try binding your finger with polyester cotten thread and seeing if you can break that thread by flexing your finger!.

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 Re: cork tenons on historical instruments
Author: Gordon (NZ) 
Date:   2014-02-03 03:34

Not too tight, I guess, or you will compress the bore!

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