Joral Bubble Mute - Cork Fell Off

interfx · Posted: Fri Aug 24, 2012 3:48 pm Post subject: Joral Bubble Mute - Cork Fell Off

Any suggestions of a good glue, etc. to glue my cork back on my 6 month old Joral mute?

Any suggestions? Surprised by this, after I paid a premium for this mute...
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davidkoch · Posted: Fri Aug 24, 2012 8:34 pm Post subject:

Perfect! You can replace the cork with foam and not have to work to take the cork off!!!!

I just cut the cork so that it would lay flat on top of a sheet of black adhesive backed craft foam and traced it. Cut it out and stick it on the mute. It doesn't fall out and you don't have to worry about quick mute changes.

It was the best thing I did to my JoRal Copper Bubble Mute.
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KMT · Veteran Member Joined: 17 Sep 2007 Posts: 477

The best glue I've found for mute corks has been Gorilla Glue. Krazy glue and Super glue have not worked well.

trumpaholic · Posted: Sat Aug 25, 2012 9:17 am Post subject:

This is what I did to my Jo Ral Bubble mute. Put a 1" piece of bicycle tire tube over the existing cork, works very well. I also repaired a vintage harmon with 1/3 of the cork off, and it did the job as well.

http://i77.photobucket.com/albums/j56/trumpaholic/100_2794.jpg
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homebilly · Posted: Sat Aug 25, 2012 9:57 am Post subject:

the tube works well but dries out pretty fast.

i use a .99 cents store glue gun to make my cork stick.
it works great. a blowdryer will get the glue hot enough if you need to
reposition it.

ron
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trpthrld · Heavyweight Member Joined: 09 Mar 2007 Posts: 4810

Trumpaholic...ya beat me to it!

I have been using a piece of bike inner tube (from a mountain bike) for over 2 years now, and love the results.

The only difference in mine and the one in your pic is the piece of tube is long enough to go just past the bottom lip of the cork. For me, this seems to help it with its "grip" on the cork, and only very seldom will I have to pull it back down. It will creep up a little over time, but never to where it pops off.

I have also done some A/B testing of the same model mute - bare cork and cork with tube over it. To my ears and others who were there, there was no difference in the sound. We thought the rubber might absorb or deaden some of the sound, but not that we could detect.
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trumpaholic · Posted: Sat Aug 25, 2012 1:09 pm Post subject:

hey Tim, I put this on when I read a thread here on the TH some time ago. Perhaps you initiated the topic!

I have checked it with a good tuner, and there was no change in pitch or to my ear tambre.

It is nice to have a harmon that you can put in and have the confidence that it will not pop out at the worst possible moment!

Your leadpipe swabs rule man!
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etc-etc · Heavyweight Member Joined: 19 Jan 2008 Posts: 6191

Could you post a picture of the mute with the tube?

RandyTX · Posted: Sat Aug 25, 2012 2:28 pm Post subject:

trpthrld · Heavyweight Member Joined: 09 Mar 2007 Posts: 4810

Altho I've touted using the inner tube in place of or augmenting cork for some time, I can't claim credit for its idea. That came from another THer, Bucaneer61.

Hope he's still around, haven't seen his name on any threads lately.
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c.nelson · Posted: Sat Aug 25, 2012 3:03 pm Post subject:

Rubber cements what I use, contact adhesive.
Cork you can file to fit your bell, if you have the skill...

It's not an easy thing to do, matching the taper and keeping it concentric.
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ttrumpett · Regular Member Joined: 14 Oct 2007 Posts: 36

christiwans · Posted: Tue Aug 28, 2012 1:29 pm Post subject:

I like gorilla glue, but it expands a lot - if that bothers you, liquid nails and locktite both make a pretty good all-purpose adhesive that come in little metal squeeze tubes (like trombotine). Never had any issues.

That being said, my cork fell off of my bubble just this week and I decided to opt for the cheap $1 generic tube of the same from walmart.... it took a while to set, but it seems to be working pretty well now.

Last, did you keep your mute in your car for a while, or in a warm space? that might be why the glue died so quickly. Mine has been stuck just fine for years, and then i accidentally left my mute bag in my car (in Oklahoma...) for a couple weeks. This was Oklahoma last month:

http://2.bp.blogspot.com/-gx_6MmA-F-A/UBrf5VzrIWI/AAAAAAAAC60/xnqDORCnMHE/s1600/cedumpsterfire.jpg

The next time i twisted the mute into my bell, the whole thing popped off cleanly. oops....
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Crazy Finn · Posted: Tue Aug 28, 2012 1:34 pm Post subject:

What if you have a silver trumpet? Wouldn't the rubber inner tube be a problem for the silver plate?

I remember reading about not using rubber o-rings on silver horns.
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trpthrld · Heavyweight Member Joined: 09 Mar 2007 Posts: 4810

cheiden · Posted: Tue Aug 28, 2012 2:28 pm Post subject:

If it failed after only 6 monthes I'd contact JoRal. Otherwise I'd give the Gorilla Glue a try.
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roynj · Heavyweight Member Joined: 19 Oct 2002 Posts: 2065

I replaced a worn cork on my wick wa-wa mute using a sheet of peel and stick black craft foam material that I got a michaels craft store. It works great and looks great too. The hard part was getting the right shape to cut out. You can't just cut a one inch strip and wrap it around the mute because, man, it wont fit. I ended up fitting a piece of paper around the mute and then making a pattern to cut the foam. It works pretty good, but you have to be patient with it. The foam works a lot better than the cork ever did too.

Bill Dishman · Heavyweight Member Joined: 06 Feb 2003 Posts: 1174

Use "Contact Cement".

Works great. Does not fail.

For replacing cork....

cut a "template" the size and shape of the cork. Use paper for this.

When cork wears out over years (the contact cement will not) lay the template flat and cut a piece of dense 1/8" cork (not the type that looks like particle board) with an exacto knife.

Bevel one edge and cut the length a little long so it overlaps the beveled edge. Trim and lightly sand to make smooth and you are all set.

I put an extra layer of cork on my Jo-Ral due to the size of the bell flare that I use.

Bill Dishman
Gainesville, Florida