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Re: repair/adjustment advice needed

Author: Chris P
Date: 2020-01-04 00:11
Attachment: PA170003.JPG (676k)
Attachment: eatontenon1.jpg (153k)

I've sleeved an excessively loose middle tenon on a clarinet with plastic and that can be made to be an absolute perfect fit in the socket with no risk of binding due to the smoothness/waxiness of the plastic (2nd attachment).

Another option is to metal sleeve the tenon or fit a metal socket liner (see 1st attachment), or both as is often done on oboes. But these are drastic measures.

A less invasive method is to machine down the tenon rings, then build them up oversize with superglue and wood dust, then machine to the required diameter. This too is less likely to bind due to the superglue and if anything, the tenon ring at the shoulder should be longer than the end tenon ring (up to double the length) so there's more contact with the socket and therefore more stability. The tenon cork doesn't have to be as wide as it is on most clarinets. Some clarinets with a very thin tenon ring at the shoulder will be more likely to wobble as there's going to be some wear of the socket and less purchase with the tenon ring.

A loose or wobbling tenon in its socket is also detrimental to the instrument as when it rocks, it will exert localised pressure at the front of the socket at the base which is right above the C/G tonehole and can cause the socket to crack right through to the tonehole which can be an expensive repair depending on the severity. A well fitting tenon won't rock about or cause pressure points within the socket.

Former oboe finisher
Howarth of London
1998 - 2010
The opinions I express are my own.

Post Edited (2020-01-04 00:13)

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repair/adjustment advice needed new

m1964

2020-01-02 23:50