From: Lukas Werth (lukas.werth@rz.hu-berlin.de)
Date: 11/07/00-09:33:59 AM Z
At 14:03 07.11.00 +0100, you wrote:
>I am trying to do a POP print using 0,8 ml AFO, 0,8 ml
>Sodiumpalladiumchloride, 2 / 3 drops Sodiumtungstate and one drop of 5%
>Gold. I am printing on Arches Platine.
>This combination gives me a color separation. I get a gray blue sky and a
>brownish ground but there is some mottling in the brown tones. I think it is
>in the combination of tungstate and gold. I need a clue. I want to keep the
>effect and not the mottling. Does someone has experience with this specific
>combination ?
>
>Sincerely,
>
>Witho.
>
>
Witho,
I have no experience with sodiumpalladiumchloride, but I have used sodium
tungstate and gold chloride with the lithium salt (Ziatype).
Sodium tungstate gives a brown colour and pulls contrast, whereas gold
chloride gives a bluish or, in higher concentrations, purple colour, and
seems to be considerably faster than the palladium component, which means
it appears more in the highlights, which have led in my printing with
combinations of about 50% pl/50% gold to split tones - purple highlights -,
but regrettably often accompanied by a reduced tonality, and a harshness of
the highlights.
You can get interesting colour effects by adding sodium tungstate, but have
to be very careful with the proportions, or otherwise mottling is likely.
The paper sort also seems to matter here, but Arches Platine is the one I
would also trust most for such experiments.
Lukas
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