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Key Corks

Author: ica
Date: 2004-01-08 02:57

I need to replace some of the key corks on my clarinet and really want to do it myself. Problem is- they are so worn I can't measure them to know what sizes I need to get.

Any suggestions? Is there a spec shet somewhere for a Bb Bundy Soprano clarinet?

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Re: Key Corks

Author: Gordon (NZ)
Date: 2004-01-08 03:30

For linkages, as thin as possible so that there is non-squishy transmission of motion, and reliable linking of keys. Natural cork is seldom the most appropriate material.

For all locations, as thick as is necessary to make the mechanism as quiet as possible. Often natural cork is not the best silencing material.

They should not be so thick as to interfere with the appropriate venting of tone holes, to avoid 'fuzzy' sounding notes and not flatten notes. This is individual to each model, and can really only be ascertained by play testing. Reed strength, mouthpiece, embouchure and air pressure all have a bearing on fuzziness of notes also. However, usually the geometry of a key can be altered so that any cork thickness can be used - within reason. The combination of key geometry and 'cork' thickness and must result in a good, positive 'feel'.

So an astute technician makes decisions as he goes, key by key, for any particular instrument. Often, what the manufacturer originally did is far from ideal.

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Re: Key Corks

Author: markeymark
Date: 2004-01-08 03:33

Post Edited (2004-01-08 03:55)

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