From: Dave Rose (cactuscowboy@attbi.com)
Date: 03/04/03-07:43:20 PM Z
Years ago, I tested about 6 different papers. Rives BFK worked well for
both gum and cyanotype, so that's what I use. I preshrink the paper, coat
twice with Knox gelatin and harden the size with formaldehyde. Yes, sizing
does help.
I use either pinhole or enlarged lith film negatives, so I can't help you
with curves for digital negatives.
Best regards,
Cactus Cowboy
Big Wonderful Wyoming
----- Original Message -----
From: "Matti Koskinen" <mjkoskin@koti.soon.fi>
To: <alt-photo-process-l@usask.ca>
Sent: Tuesday, March 04, 2003 12:34 PM
Subject: gum printing papers
> hi
>
> I'm having trouble with watercolor papers. The cheap one, that would be
> ideal for practising doesn't hold the pigments, they just get off from
> the surface. I bought two sheets of Saunders 300gsm paper and the prints
> are ok. But here one sheet costs $6 and as 99% of my prints fail, it's
> getting too expensive. What kind of paper should do the job well for
> practising? Does some sort of sizing help?
>
> Does anybody have a curve for producing digital negatives for gum print?
> I'm using Gimp, so a curve posted for cyanotype recently is the format
> I'm searching for.
>
> TIA
>
> -matti
>
>
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