The "New" Cyanotype - Part 2

SCHRAMMR@WLSVAX.WVNET.EDU ( SCHRAMMR@WLSVAX.WVNET.EDU)
Sat, 04 January 1997 7:35 PM

Hello blueprinters.
I have now had a chance to let Dr. Ware's "new" cyanotype formula age
several days. I also picked up some citric acid and prepared the required
40% solution which I added to the sensitizer before coating.

I must say that with the citric acid added, the prints do clear better, but
it took a 20 minute, running water wash. I tried hypo clear again and was
able to clear the whites faster.

Again this time I noticed no increase in Dmax over my old formula.

Judy mentioned to me that she observed that coated paper, dried with a
hair drier resulted in lower Dmax. I had never heard of this so I tried
that. Judy is right. The paper dried with a hair drier had a lower Dmax.

Since I am now down to the bottom of the original bottle of sensitizer
I mixed, this will end my tests for awhile.

I am eager to hear some results from other printers (Judy, are you
reading this?)

Bob Schramm

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