CCBaggett@aol.com
Date: 05/07/00-06:02:28 PM Z
Bob,
I am using Mike Ware's cyanotype formula chemistry to 'proof' negatives
from a Zero 2000 pinhole camera (120 rollfilm, 6cmx6cm) I got from the
Pinhole Resource- a neat camera. I'm using Crane's Platinotype I got from
B+S. I'm not having any problems. The intensity of blue is very good. After
exposure, I put the print into a weak solution of hydrochloric acid (10ml in
1liter of water) for 30 seconds to 'set' the color as per Mike's instructions
in his book. Then I wash in my vertical archival print washer for 20 minutes.
I believe I got the chemicals from the Photographer's Formulary and mixed
them myself. My sensitizer solution is now easily 6 months old. The
Hydrochloric acid came from them as well and is a 31% solution. I have Mike's
book, which I highly recommend. I think I ordered it from Amazon.com. Also, I
am not sizing the paper or using Tween. Hope this helps. Cheers. Charlie
In a message dated 5/7/00 1:57:57 AM Eastern Daylight Time,
photobob124@yahoo.com writes:
<< Question # 1: I tried printing a 6x9 glass negon
Cranes Platinotype with the New Cyanotype process
yesterday adn ran into some problems. First of all, I
came to realize my unopened chemistry had turned
greeen. I had it for well over a year. Second,
despite the fact that the pre-washed prints had great
blue color, the blue proceeded to wash out of the
print, bleed, and stain highlights. With the the New
Cyanotpye Formula, I used 1 drop Tween 20 and 1 drop
Citric acid (as per insrtructions with the B&S
purchase). The print was brush coated and washed for
15 minutes in several trays sitting water. The
bleeding started alomst immediately. By the way
Simili Japon 130 gm was a heavy bleeder. I really like
it for Platinum/Palladium printing, but it does not
apear to be a contender for Cyanotype based on this
recent expereince.
2. I plan to try some other papers such as Bienfang
360, Fabriano Uno, and Cranes Prchment Wove. Any
other paper sugestions???
3. A friend suggested using spray starch to increase
sizing of the platinotype and other papers to decrease
bleeding, Any thoughts???
4. Finally, Does anyone know where I can obtan a copy
of Mike Ware's book on Cyanotypes???
Thanks to all. The information posted on this list
has been invaluable and I appreciate everyone's
expertise and expereince sharing.
Bob Parker
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