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Joint Cork

Author: Ray Swing
Date: 1999-04-08 19:02

This is an update on my experience with the Synthetic, Peel and Stick joint cork. After about 6 months of usage, the mouthpiece cork is starting to slide around. It appears that the heat and moisture has change the composition of the glue used on the backing to a consistency that it is no longer holding properly. Th Synthetic cork is just fine, but the glue appears to be a slight problem. I think I'll remove it and try the shellac method to see if it will hold better.

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RE: Joint Cork

Author: Rick2
Date: 1999-04-08 19:19

Do you mean contact cement? Or is the shellac method different from that?

I've got the synthetic cork on the upper joint barrel tenon and the lower joint bell tenon. Doing fine after 3 months.

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How Old Are Horns That Need Corks?

Author: paul
Date: 1999-04-08 20:20

Okay, a slightly different subject, but I'm curious. My horn is about 3 years old, with relatively light use. I shouldn't see any signficiant problems with my corks, at least for a while longer, right? How old does a horn get before it needs a new set of corks or a new cork? Also, which cork tends to "wear" the fastest? I have to realize up front that this is a set of very generic questions, but it would be nice to have a rough estimate from folks who have gone through it already on their horns.

Thanks in advance.

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RE: How Old Are Horns That Need Corks?

Author: Dee
Date: 1999-04-08 20:35

paul wrote:
-------------------------------
Okay, a slightly different subject, but I'm curious. My horn is about 3 years old, with relatively light use. I shouldn't see any signficiant problems with my corks, at least for a while longer, right? How old does a horn get before it needs a new set of corks or a new cork? Also, which cork tends to "wear" the fastest? I have to realize up front that this is a set of very generic questions, but it would be nice to have a rough estimate from folks who have gone through it already on their horns.

Thanks in advance.
-------------------------------

This is totally unpredictable. I've had key corks (which don't get any real stress) fall off within months and joint corks last years. If the joint corks are on the thick side, they may wear faster but again there is no rule. In hot weather, the adhesive may soften and an almost new cork come off. I live in an un-airconditioned home and had this happen one very hot summer.

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RE: Joint Cork

Author: Ray Swing
Date: 1999-04-09 19:39

I have used Stick Shellac on my clarinet joints and pads and on my Sax , since I am not concerned about cracking under heating. However, since my Mouthpiece is crystal and I'm concerned about possible heat cracking it, I will use a liquid adhesive without heat. As I'm sure you are well aware of heat can cause big problems with your clarinet and if you are concerned at all about damage, I would suggest always using a contact cement of some kind which doesn't require heat if you are doing self repair.

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