Re: Lithium palladium vs. normal palladium
are you rod coating or brush coating—that could be part of the difference.
In a message dated 1/18/07 2:21:23 PM, email@example.com writes:
But Witho is double coating with half-strength solutions (or using two
times water - if you like). So the final amnt. of iron sensitizer and
Pd double salt remans the same (therefore should act the same). I had
to increase exposure times back when I was double coating Classic
Cyanotype to get better Dmax - but the solution wasn't half strength,
it was full strength. Probably it was due to the extra filtering
effect caused by more concentrated coating solution...
BTW, 2ml for 12x20 sized print on COT320 is very little by my
standards. I'd use about 2x solution for that size. I use 0.2ml to
0.15ml per 10 square inches depending on the RH and coating method
(glass rod / brush). See below:
12 x 20 = 240 / 10 = 24 * 0.2 = 4.8ml,
12 x 20 = 240 / 10 = 24 * 0.15 = 3.6ml.
See? Even at 0.15ml per 10 square inches, I use about 80% more than Witho!?
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