From: Judy Seigel (jseigel@panix.com)
Date: 02/25/03-10:09:46 PM Z
On Mon, 24 Feb 2003, Katharine Thayer wrote:
[chemical X] would also probably, as I said in the discussion
> months ago about removing hardened gum, soften the gum enough that you
> might be able to scrub it off with a brush if you really went at it. So
> both things are true.
If I were trying to get a gum coat off platinum or palladium, which I
gather was the question, my guess is that a bath of chlorine bleach would
be more efficient. It can pretty much (say at 10 to 20%) strip a coat of
gum right off, whereas it doesn't touch the pt/pd (not even at full
strength).... Or so my tests have shown. Some pigments are impervious,
though, which could be useful also.
Of course my own inclination would be to add another coat of gum, but
that's not this question either.
J.
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