[Alt-photo] Re: choice of paper for Pt and gum over Pt prints - was Re: Re: Replacement paper for Arches Aquarelle

[Serdar Bilici]

Dear Diana,

In parallel to Stan Klimek's experience with BFK Rives printmaking
paper, I had superior dMax with printmaking papers (gravure papers
specifically) compared to watercolor papers. Printmaking papers unlike
watercolor papers have no or very little surface sizing. They are very
absorbent due to lack of extra sizing. They retain good amount of
sensitizer, but they can be easily abraded due to lack of surface
sizing too. Although the idea of better dmax is attractive, the
coating requires more care imo.

If you read the previous comments on the APUG forum, you will see Stan
Klimek was not able to use Fabriano Artistico TW HP 200gsm with oxalic
acid treatment. I had the same experience, that particular paper was
the reason I looked for an alternative acid to de-calcify papers.
Sulfamic acid treatment works with every paper with every alkaline
sensitive process and the paper remains free of acid-base reaction
byproducts.

P.S. - Irving Penn might have de-calcified his papers and even might
have re-alkalized his papers after printing. It is not clear according
to this informative post on the same blog. There are more interesting
articles on Irving Penn and his prints on the blog.
https://artofplatinum.wordpress.com/category/irving-penn-2/page/3/

Best Regards
Serdar



On Fri, Feb 28, 2014 at 6:12 PM, Diana Bloomfield
<dlhbloomfield at gmail.com> wrote:
>
> Okay; thanks, Denny.  I'll give it a try.  I have no idea why I've had trouble with it-- but maybe I used an incorrect amount.  I love Rives papers, especially for gum, so it would be great to have it for pt/pd, too.  If I have some time, I'll try it today and let you know what happens.
>
> Diana
> On Feb 28, 2014, at 11:00 AM, Denny wrote:
>
> > Pretreating with oxalic acid should be trouble-free, just soak the sheets in
> > a tray of oxalic acid (I usually use 3%) for about 5 minutes (or until the
> > bubbling stops if there's a lot of buffer in the paper) and then just hang
> > the sheets to dry.  This works for me with many papers including the 250 gsm
> > BFK Rives.
> >
>
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