 The Oboe BBoard
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Author: jhoyla
Date: 2010-09-14 20:48
Hi everyone,
The cork has come off my bottom bell-joint. The joint itself is actually tight enough that it stays in place without the cork, but obviously I don't want to risk playing it like that. The cork is a bit tatty, but servicable.
How do I glue it back on? I would take it to a repairer (there is one oboe repairer that I know of in this country) but he is abroad at the moment, not back for several weeks.
J.
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Author: Chris P
Date: 2010-09-14 21:54
Wrap it up with PTFE tape for the time being to keep it in place, then have a new tenon cork fitted when your tech gets back from holiday.
Former oboe finisher
Howarth of London
1998 - 2010
The opinions I express are my own.
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Author: mschmidt
Date: 2010-09-15 02:38
Both of the tenon corks on my Marigaux fell apart within a few weeks of each other in July, I had already scheduled an overhaul of the instrument for the end of July. PTFE (Teflon) tape held them both together for the duration.
Mike
Still an Amateur, but not really middle-aged anymore
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Author: jhoyla
Date: 2010-09-15 05:56
Thanks - I'll do that. Problem is that the cork has come off completely and the joint is pretty tight, so it will rotate. I'll be aggressive with the teflon.
Or I'll just move to my backup instrument - it's a while since it had a decent test drive. Takes me a while to get used to it, because its 2nd octave is so much lower than on the Loree, and changes my whole angle of play.
J
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Author: PlatinumPisces
Date: 2010-09-15 18:53
I used a tiny bit amount of wood glue and stuck the cork back together onto the wood. Obviously wait an hour before putting the instrument together.
I took it in about a half a year later to get it professionally fixed at RDG in Los Angeles and they could not tell it was ripped! Apparently I have a career in cork tenon repair haha.
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Author: jhoyla
Date: 2010-09-15 19:55
I tried that, but obviously was not patient enough and it came right off again.
Tolerances in this particular tennon are very tight - as I said before, the joint stays together firmly even without any cork there at all. When I wrapped with maybe two turns of cling-film it would not close all the way. So I'm wary of getting a bit of glue on the tennon and then having to file it off after it has hardened.
Perhaps I'll give it another try. Thanks for the tip.
J.
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Author: Chris P
Date: 2010-09-15 20:07
PTFE tape is better than cling film in this instance as PTFE tape is around 0.07mm thick and will compress even further, plus it won't bunch and ride up like cling film. Only wrap the cork with it to keep it in place and then assemble it to bed the tape down. You can always wind more tape round if you need to.
Former oboe finisher
Howarth of London
1998 - 2010
The opinions I express are my own.
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Author: jhoyla
Date: 2010-09-16 09:11
Yes, PTFE tensile strength is greater as well, which will let me wrap tighter.
I was using cling-film just to hold the cork in place while the glue dried. I don't think I waited long enough. I'll use PTFE (over the weekend).
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Author: Chris P
Date: 2010-09-16 14:22
Leave the PTFE tape on until you can get the tenon cork replaced - it all has to come off to have a new tenon cork fitted anyway, so bandage it up in the meantime so you can at least still play.
On plastic oboes or wooden ones with lined sockets, make sure the tenon cork is left fairly wide (but still sanded down to a barrel shape) as it will exert more outward pressure on the socket walls preventing the joints from coming undone.
On wooden instruments with unlined sockets, the tenon cork can be sanded down so the tenon goes 2/3rds the way on without any cork grease (but still feeling tight). The inside of the socket won't have such a smooth and perfect surface as a plastic or metal lined one, so will offer more grip to the tenon cork (but the tenon should still be a good fit in the socket even without the tenon cork).
Former oboe finisher
Howarth of London
1998 - 2010
The opinions I express are my own.
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Author: jhoyla
Date: 2010-09-17 07:44
The PTFE tape works beautifully - in fact, it is so good I may not even bother getting it fixed, since it 'aint broke no more.
(Only kidding - I want it to look perfect, of course!)
Thanks for all the advice!
J.
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