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RE: fading Ware's cyanotypes
On Tue, 14 Mar 2000, Randall Webb wrote:
> ... It clogs up our water pipes but imparts a subtle
> turquoise tone to our cyans.
I've read but not tested that you can also impart "subtle turquoise" by a
brief weak final acid bath, different baths doing different turquoise.
> ... Finally look at your washing times. Prolonged
> washing can take out the blue colour.The print is washed when the
> yellow stain in the highlights disappears. Then give it 30 seconds in
> a very dilute solution of hydrogen peroxide a brief rinse in cold
> water and dry.
Randall, I don't know about the Ware process, but on Hershel process the
hydrogen peroxide is NOT an intensifier if that's the intent. And again,
I don't know if so in Ware process, but I have found a good check for
washing is to look at the back of the print -- an inadequately washed
print will show a yellow or yellow-green stain. When the back of the wet
print looks clean, usually is. If you notice stain on back of dry print,
give it more wash, will still wash off.
And I agree with Randall about downscale paper for cyanotype -- that's a
lot of its appeal: cheap & easy, no preciosity. Although if you INSIST,
for "regular" cyano, any paper for platinum should be good -- they're iron
processes.
Judy
I always feel that we attach too much reverence to alt
> processes. After all they are only bits of paper which are infinitely
> reproducible. Slap it on the paper, dry it, put it in the sun and wash