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Sorry,
Scott, you are dealing with a redux reaction, oxidation of the VanDyke by
the Cyanotype. Occasionally I have been able get results that seem
to last a while (by using larger concentrations of Van Dyke but when I have gone
back a couple years later to the prints I found that they had been eaten up by
the blue dye. Try using Cyanotype over palladium or platinum, that
works. .If someone has been able to make it work, I would also like to hear
about it. Joachim
I have been making cyanotypes and have tried putting a
layer of Van Dyke over and really like the result. Question; do I need to fix
the VDB layer with hypo. This seems to bleach out the cyan layer a bit. Or is
there some other cause?
Scott B. Weber
Associate Professor of Photography
Department of Fine Arts
Barry University
Miami Shores, Florida
305 899 4922
sweber@mail.barry.edu
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