 The Clarinet BBoard
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Author: johng ★2017
Date: 2005-09-13 22:55
Is there any special treatment a crystal mouthpiece needs when gluing on the cork?
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Author: Chris P
Date: 2005-09-13 23:05
Just make sure you clean all the old glue off and degrease the slot well with spirits before you stick the new cork on.
What contact adhesives do you use?
Evo Stik should work fine, but I'm sure there are better contact adhesives on the market - and I'd be more than happy if someone can suggest anything better - preferrably with an instant grab and doesn't require any heating up for it to melt (but only for glueing cork, felt, etc. and NOT pads - I still use shellac for that) as I can't stand Evil Stink - it's the smell (especially the toluene fumes)!
Former oboe finisher
Howarth of London
1998 - 2010
The opinions I express are my own.
Post Edited (2005-09-14 02:39)
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Author: David Spiegelthal ★2017
Date: 2005-09-13 23:52
I like to clean the old glue off with acetone (nail polish thinner), and glue the new cork on with the non-running (gel) form of "superglue" (cyanoacrylate).
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Author: Gordon (NZ)
Date: 2005-09-14 00:07
For some reason manufacturers of crystal mouthpieces generally use a n adhesive that fails. They also have this inclination to use low grade composite cork. Hmm.
I use Evostik, and like it. I try not to get too high on the fumes. Difficult to obtain in USA, but they have other contact adhesives there, which are very similar.
Where the two halves of the mold meet to cast the crystal blank, two sharp edges are usually left on the lip of the tenon that is next to the cork, furthest from the open end of the tenon.
These can chew away at the inside of the barrel. So I use a miniature diamond 'saw' to remove them. I don't know why the manufacturer doesn't!
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Author: Chris P
Date: 2005-09-14 00:23
Aah yes, the mould mark - stupid really, but I have a set of diamond files and it never occured to me to file this bit smooth!
Are the current Pomarico crystal mpcs better made than their Vandoren branded ones (which were twice the price as the originals), and do they have narrower bores (the Vandoren A1 I've got has a 1010 bore)?
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Author: ron b
Date: 2005-09-14 00:46
Hahahahaha!
(he laughs nervously to keep from crying uncontrolably) Those annoying mouthpiece casting seams!!!
Manufacturers don't remove those sharp-edged casting seam remnants because they know that sooner or later...
You'll do it For Them, Gordon 
... and that's only one of many things these days left to the techs to remedy that should've been done before leaving the factory -- [grrrrr].
- r![[cool]](http://test.woodwind.org/clarinet/BBoard/smileys/cool.gif) n b -
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Author: Gordon (NZ)
Date: 2005-09-14 05:07
The trouble is that when a person pays top dollar for what they believe to be top standards in manufacture, it finishes up being the hapless technician whose job it is to shatter their illusions.
I recall here about 15 years ago a local guy bought what he believed to be the ultimate in vehicle manufacture, a Rolls Royce ?????. And that is probably what the vehicle was marketed as.
He finished up with a list of many dozens of faults. Although the agents offered to put all these things right, because his belief had been totally destroyed, and the car was not the item he thought he had bought, he was asking for a total refund, and fought for this in a law courts. I have forgotten the outcome.
Post Edited (2005-09-14 10:06)
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Author: Chris P
Date: 2005-09-14 09:39
"The trouble is that a person who pays top dollar for what they believe to be top standards in manufacture, it finishes up being the hapless technician whose job it is to shatter their illusions."
Hmmm, most Selmer SA80 series II and III, and Reference saxes and a Leblanc Concerto II spring to mind there!
I couldn't find much that was right with one of the first Concerto IIs that hit the UK shores, and the customer got a raw deal from the company he bought it from, they didn't want to know even though it should have still been under warranty.
Even though the faults were extensive and all down to manufacture, it did have a gorgeous tone.
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Author: David Spiegelthal ★2017
Date: 2005-09-15 01:54
I've recorked at least a dozen crystal mouthpieces by the method I described above, without ever filing down the molding seam on the tenon, and have never had a cork cut or worn through by the seam, nor shown any evidence of wearing the inside of the barrel -- but that may just be luck, that the corks were thick enough for the particular barrels. If the cork had to be quite thin to fit a tight barrel, then I could envision the seam causing problems as Gordon has seen.
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Author: Gordon (NZ)
Date: 2005-09-15 13:27
Even if it DOES attack the barrel a little, the effect is only a chamfer on the inside of the end. It would not really affect anything.
But the aesthetics of it just annoys me. LIke it does in the handle of the local, plastic, milk containers. :-)
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