From: Eric Nelson (emanmb@yahoo.com)
Date: 07/30/02-11:27:09 AM Z
I'm doing a cyanotype project this week and it's been
years since I've monkeyed w/this process.
My question is, using the formula below, (unless I
hear otherwise), what is the best/favorite paper using
brush application? At this moment I'm testing Platine
since I have that in the lab, but the first test was
kinda poopy, (i.e. weak shadows, blotchy).
I am changing the length of time the sensitizer sets
before using the hair dryer to see if that helps.
Also, it's a hot steamy day here in Chicago but have
AC in the lab and I'm using sunlight to expose these.
Thanks for any and all help!
Eric Nelson
Solution A:
Ferric Ammonium Citrate 27.2 gm
Oxalic Acid .5
Water to make 100 ml
Solution B:
Potassium Ferricyanide 9.2 gm
Oxalic Acid .5 gm
Ammonium Dichromate 0.2 gm
Water to make 100 ml
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