From: Carl Weese (cweese@earthlink.net)
Date: 04/07/02-02:02:28 PM Z
Witho,
OK, those are very different concentrations from the ones I've used, and may
very well account for getting a POP print from that chemical
combination.---Carl
--
web site with picture galleries
and workshop information at:
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----------
>From: Witho Worms en Jorien van Santen <verzet13@xs4all.nl>
>To: alt-photo-process-l@sask.usask.ca
>Subject: Re: DeCosse prints
>Date: Sun, Apr 7, 2002, 11:54 AM
>
> Hello Alejandro,
>
> What I did is :
>
> Mix an equal amount of Ammonium Ferric Oxalate (in my case 35%) with an
> equal amount of Potassium Chloroplatinite (in my case a 33,9%). Equal means
> according to the amounts involved in the reaction.
> I coat on Arches platine and let it dry for 90-120 seconds. After that I
> make a quick blow with a fan (no heat) for 20-30 seconds (for a 11x14 inch
> print).
> Than I print, pre-wash for two minutes and clear in EDTA.
> I mix al my chemicals myself and I buy powdered metals (salts) at Bostick's.
> I use strong concentrations, as said, based on Jeffrey's research. You can
> try a double coat. I coat Arches just below a 'bleeding' point. Lately I
> have been experimenting with a double coat on Arches based on a 20% Afo.
> This allows me to use a platinum mixture that stays in solution at room
> temperature and gives me a high D max.
> Let me know if it worked for you.
>
> Cheers,
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