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 Using Teflon Tape
Author: Ben Shaffer 
Date:   2018-09-01 16:55

So, I recently bought a Backun Blackwood Barrel for my Vito V40 Plastic Clarinet. The barrel seats snugly when I connect it to the Left hand section of the body. however the Van Doren M13 Hard Rubber Mouthpiece was loose.
I took Teflon tape and wrapped it around the lower part of the MP and it fits perfect now.
I'd take the MP down to my local repair person to recork it, but i believe with back to school in full swing, shes got about 40.000 Instruments she needs to work on.
Quick question, would there be any damage to the MP or Barrel if I leave the tape on several months?
I've used Teflon Tape on my Bagpipe chanter to connect to lower section of the Bagpipes.
Have done this with both Blackwood parts as well as Delrin, but never hard Rubber to Blackwood.
BTW. the Backun Barrel sounds outstanding!

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 Re: Using Teflon Tape
Author: Chris P 
Date:   2018-09-01 16:59

It will only cause the cork to compress, but shouldn't do any harm to the tenon.

If you use too much tape and it's a really tight fit in the socket, you will risk cracking the socket if it hasn't got the support of socket rings.

Chris.

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 Re: Using Teflon Tape
Author: Ken Lagace 
Date:   2018-09-01 19:22

Another trick is to heat the loose cork (carefully!) with a match which makes it swell.

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 Re: Using Teflon Tape
Author: kdk 2017
Date:   2018-09-01 23:25

Ben Shaffer wrote:

> Quick question, would there be any damage to the MP or Barrel
> if I leave the tape on several months?

I agree with Chris that it won't hurt the clarinet. Tape will certainly get you past your repair tech's busy season. But you may find that the tape starts to bunch up and become a nuisance considerably short of a time frame of months. You can ride the tape as long as it doesn't cause its own problems. If it starts bunching, you can always take it off and wrap fresh tape. I suspect sooner than later you will want to get a thicker cork put on because in the long run it's easier.

Replacing a tenon cork isn't the hardest thing to do on a clarinet and is a fairly straightforward DIY project. Having my repairman do it is much easier, especially since he has a lathe to adjust the final thickness - I have to do it by hand. But I have done a few replacements myself with nothing on hand but the sheet cork, an Exacto knife and contact cement.

Karl

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 Re: Using Teflon Tape
Author: Ben Shaffer 
Date:   2018-09-02 04:43

OK Thanks for the info guys!

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 Re: Using Teflon Tape
Author: clarnibass 
Date:   2018-09-02 07:37

>> especially since he has a lathe to adjust the final thickness - I have to do it by hand <<

I have a lathe and almost always prefer to not use it for tenon corks.

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 Re: Using Teflon Tape
Author: cigleris 
Date:   2018-09-02 14:42

Using plumbers tape is a good quick fix for loose joints.

Peter Cigleris

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 Re: Using Teflon Tape
Author: shmuelyosef 
Date:   2018-09-03 00:06

I have a lathe, a drill press and a bench motor, and never use them for tenon corks, although I do have a Ferree's fixture that I use on the drill press (at 200 rpm) for alto and tenor saxophone necks.

I generally use 280 grit wet-dry sandpaper and tape the back of the entire sheet with a single thickness of 3M packing tape (like the clear stuff used for shipping packages). Then I slice off strips the width I need in the 9" direction...they NEVER tear in use. I cut them the exact width of the starting strip of cork (which I have pre-beveled before gluing).

If you measure the tenon and socket diameter and calculate the right thickness cork to use (generally 1/64" or 1/32", sometimes 3/64") it takes 2-3 minutes to clean up the glue joint (I use an emery board from the drugstore cosmetics section) and then thin it. I simply use my LH to hold the joint and index finger to capture the sandpaper against the joint, wrap it about 1/3 of the way around the tenon cork and 'pull thru'. Rotate the joint about a 1/4/turn and repeat. Every 2-3 times through...check the fit. I also measure the OD carefully at each checkpoint, mainly to make sure I'm staying constant diameter.

Every clarinet player should learn how to do this and have some contact cement and cork available. Since almost all clarinet tenons are either 12mm or 10mm (center tenon) wide, you can cut these in batches and pre-bevel a bunch of them. I get 40-50 pieces out of a 4"x12" sheet of cork.

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 Re: Using Teflon Tape
Author: Ed 
Date:   2018-09-03 23:29

I have had teflon plumber's tape on instruments for months (maybe even longer!) with no problem. If it compresses, add another layer. Yes, I could just recork it, but it was working so I just left it.

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 Re: Using Teflon Tape
Author: Bob Bernardo 
Date:   2018-09-04 04:10

Google how to replace a cork. Replacing cork is something most players need to know how to do. It's easy.

Should take 15 minutes, most of it is due to the glue drying. It's pretty basic and a feeling on positive achievement. You can get the cork at JL Smith and the Contact Cement at most hardware stores.Be careful not to get Rubber Cement. It won't work.

https://www.youtube.com/watch?reload=9&v=wVupMCvloJ4


Designer of - Vintage 1940 Cicero Mouthpieces and the La Vecchia mouthpieces


Yamaha Artist 2015




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