 The Oboe BBoard
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Author: Chris P
Date: 2018-09-07 13:39
It depends on the diameter of the socket and the thickness of the metal of the crook - so some will do well with 1mm thick cork and others (with wider sockets) may need 1.6mm thick cork so the crook cork can be made with parallel sides to keep it secure in the socket.
Like tenon corks and key corks, the crook corks are glued on with contact adhesive (Evo-Stik or similar) and the outside has to be sanded down to make the sides parallel which isn't easy to do purely by hand.
I use a wooden mandrel mounted in my bench motor chuck and the crook fits onto that so the corks can be sanded down whilst spinning to get the diameter and shape right as well as even. They should be an easy fit in the socket with a bit of resistance when greased, but not loose so they spin around or rock, or so tight that you need two people to remove them.
If you are planning on having rubber O-rings fitted, you're best having a close fitting metal tube turned up to fit into the socket with two or three grooves for the O-rings and tapered on the inside to slip over and fit on the wide end of the crook, then soft soldered in place.
Former oboe finisher
Howarth of London
1998 - 2010
The opinions I express are my own.
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mddds |
2018-09-05 23:16 |
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mschmidt |
2018-09-06 20:56 |
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Re: bocal/crook cork repair new |
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Chris P |
2018-09-07 13:39 |
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mddds |
2018-09-07 20:56 |
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The Clarinet Pages
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