From: Kerik (Kerik@Kerik.com)
Date: 07/26/02-05:19:21 PM Z
Sandy,
Have you ever tried an oxalic acid pre-treatment with this paper prior
to kallitype? I soak it for 5 minutes in a 1% oxalic solution, then
allow it to dry. With this treatment it works well for platinum and is
a great paper for gum over platinum since it handles gum bichromate so
well. Without the oxalic treatment it is useless for platinum printing.
Kerik
Sandy King wrote:
> Jeff,
>
> I buy it from Daniel Smith in Seattle. However, this paper does not
> work very well for me with the traditional kallitype that uses ferric
> oxalate so I wonder if it might not also causes problems with Pt/Pd?
> The issue is that it gives prints with a very grainy, granular look
> from large format negatives that look like they were made from
> enlarged 35mm. On the other hand, van dyke prints have a very smooth
> and creamy tone with this paper.
>
> Sandy King
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