 The Clarinet BBoard
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Author: BobD
Date: 2004-07-30 21:56
Can anyone advise what adhesive is appropriate to use on Vito Resotone plastic? I'm trying the "easy' approach to a broken tenon. Epoxy has failed twice and so far cyanoacrylate appears to be holding. I'm wondering what others have experienced. I'm looking for a strong joint not just a filler.
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Author: David Spiegelthal ★2017
Date: 2004-07-30 23:42
Cyanoacrylate might work alone, but should work much better if you first apply a plastic "accelerator" or surface prep to the mating surfaces. I know Loctite sells such a chemical (it's a clear fluid, mine came in a tiny vial along with the cyanoacrylate tube, sold together specifically to bond plastics). Chances are the tenon will break again anyway unless you reinforce it with an internal metal sleeve.
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Author: jbutler ★2017
Date: 2004-07-31 01:07
Contact Rex Bullock at Ed Myers in San Antonio. He has an adhesive that works well. I believe it is HH-66 adhesive. He also sells graphite fiber to help fill in the gaps or use to do graphite banding. You can reach Rex at 800-228-9188 or edmyersusa@msn.com.
jbutler
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Author: Ken Shaw ★2017
Date: 2004-08-02 19:33
For a similar job, I went to a high-end hobby shop that sells tools for builders of complex miniature projects (such as model sailing ships) and got several tiny drills, the same diameter as the wire of a paper clip, plus a matching hand drill. I made some test holes in scrap wood for practice and then drilled vertical pilot holes, into which I glued sections of paper clips as reinforcement. I forget what kind of adhesive I used -- perhaps Pliobond or Loctite.
I had a brainstorm that the contact cement used to put rear view mirrors on windshields might be stronger that Krazy Glue, but it wasn't, and it's really expensive.
David is right that surface preparation with an accelerant will make a stronger bond.
There was a good thread on this subject (keep scrolling down) at http://test.woodwind.org/clarinet/BBoard/read.html?f=1&i=147263&t=147147.
Best regards.
Ken Shaw
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Author: BobD
Date: 2004-08-02 22:42
So far the cyanoacrylate is holding. I am convinced that epoxy is no good on "plastic" clarinets. Next time....if the cyan doesn't hold I'm going to try the solvent cement plumbers use on PVC and CPVC pipe. There is no doubt in my mind that one must use a solvent type "adhesive". Since ABS is not approved for potable water it can contain just about anything so I really question whether it is actually currently used for clarinets.....although it might have been at one time. Thanks for your help, guys.
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