[Jewelry making - Article 00097] - Re: [Orchid] Adheisives for ivory products

[Wayne Emery]

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Hi Larry,

    As a professional lapidary, I use adhesives many times a day. I have
    found that the cyanoacrylates (Super Glues) work very well, but I
    must do my part. 

    First, choose the proper adhesive. For help, see www.Loctite.com.
    Also Google "Norland Adhesives". You can talk to chemists at either
    place and they will guide you, but I think the cyanoacrylates should
    work well for you. I have not had a failure with ivory to metal that
    I know of. Loctite makes a "Professional Grade" cyanoacrylate which
    is better than most of the other stuff you buy at the hardware
    store. Carefully clean all surfaces with acetone (caution) or 91%
    isopropyl alcohol. Use as little glue as possible. Hold the parts
    very firmly for 20-30 seconds. Be sure the parts mate perfectly. The
    gap-filling cyano's are good, but take longer to cure. Accelerators
    hasten the process, but weaken the bond....don't use them. 

    Some of the 2 part epoxies might be a good choice IF the piece is
    not exposed to lots of moisture or water. Water WILL break down the
    2 part epoxies, it's just a matter of time. 

    Some of the Loctite epoxies that need to be special ordered will
    provide a connection that can NEVER be released. They are pricey,
    but work. Hope that helps. 

Wayne Emery
The Gemcutter


 
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