Re: PT/PD MOGULS, MAESTROS & GURUS
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- Subject: Re: PT/PD MOGULS, MAESTROS & GURUS
- From: "Christina Z. Anderson" <firstname.lastname@example.org>
- Date: Tue, 13 Feb 2007 07:43:09 -0700
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Even tho I have hydrochloric acid I have never used it to reduce a print.
My notes say "palladium is more soluble in strong acids, so if you use
hydrochloric acid, the traditional clearing bath, your dilution of that
clearing bath is 0.5%, not 1% as it is with platinum." I, too, am interested
if this is wrong? And I wonder if it will work when using
NA2/palladium...hmmm...I have a too dark print, maybe I should just go do
DEAR PT/PD MOGULS, MAESTROS & GURUS ON THIS LIST,
Please help me resolve what appears to be a conflict in both the
literature and common wisdom.
Here are the two conflicting bits of info:
1) You must not use a hydrochloric first clearing bath when printing with
palladium as it will bleach the print, even though the concentration
be around 1 to 1.5 %.
2) Recently, when I asked the list if there was any way to slightly reduce
the density of a Palladium print I was told that the concentration of HCl
necessary to have any effect would be so high that it would be dangerous
use in a regular darkroom and might have deleterious effects on the paper.
I was told to just make another, lighter print.
*********So, you can see my dilemma. Is this not a contradiction? 'Tis a
puzzlement! Please enlighten me...as it were!