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Hi Linda,
I did not use oak per se but I used walnut husks
and boiled a cup or two of them in a bunch of water for a while and used the
water as the toning bath. I got my walnut husks from a basket maker.
The method is very loose because in basket lore, a basket maker would just have
an old barrel filled with rain water and toss the walnuts in that and then use
it for dyeing. It is very archival. I have NOT done this with
cyanotype but with gelatin silver prints so I cannot guarantee it will directly
apply to your situation.
I have toned with gallic, though, that I bought
from Artcraftchemicals.com
Hope this helps,
Chris
__________________
----- Original Message -----
Sent: Saturday, August 23, 2008 11:12
AM
Subject: Re:Gallic acid; Was:
Speaking of toning cyanotypes, I recently gave a cyanotype
workshop for my book arts group, and we did some toning with tannic acid,
using tea. I mentioned that gallic acid was also sometimes used but I'd never
tried it. Well, someone from the group just gave me two bags (!) of oak galls.
Does anyone know how to extract gallic acid from oak galls-- or even if it's
possible?
TIA,
Linda
On Aug 22, 2008, at 5:08 PM, Robert W. Schramm wrote:
BTW
cyanotype can be toned to achieve colors other that blue and
white.
Good luck with your work and welcome to alternative process
printing.
Bob
Schramm
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