Garland Gray II wrote:

Thanks for all the responses.
This morning I asked around about hexane, but couldn't find anything
definitive, so I called 3M tech support, and they said to use "Brakeclean"
to remove the silicone film. I had some, so that is what I used. I then
bonded with some JB Weld, which also was on hand, and it's tighter than a
tick now.
Regarding possible failure from different coefficients of thermal expansion,
I don't think it will be subjected to enough temperature variation for this
to be a factor. I didn't say what sort of jewelry it is --a pendant on a
necklass .

Well, follow up in a month or so and tell us how its holding up.
Glad it worked out for you.

--
Ian Malcolm. London, ENGLAND. (NEWSGROUP REPLY PREFERRED)
ianm[at]the[dash]malcolms[dot]freeserve[dot]co[dot]uk
[at]=@, [dash]=- & [dot]=. *Warning* HTML & 32K emails -- NUL:
'Stingo' Albacore #1554 - 15' Early 60's, Uffa Fox designed,
All varnished hot moulded wooden racing dinghy.