Heat vs Air drying

Terry King ( 101522.2625@compuserve.com)
Wed, 08 January 1997 4:46 AM

Message text written by John Barnier
>
N.B. I don't know if any of the above applies to 'traditional' cyanotype -
I haven't tested it in this way - but I'm sure there are several devotees
on the Alt Proc List who will be able to give you the answer.

<

I can't remember the question!

But the traditional process will give good separation in the highlights and
shadows and, of course in the middle tones, with negatives up to a density
of 1.4 with development in the special water I have laid on from the Thames
Water Authority; and all from a single coat. I use Fabriano 5 ot
Artistico. Sizing helps but a hake brush works perfectly well for coating.
I dry the paper naturally. I have never found that relative humidity has
affected the performance of the process. But is a good idea to ensure that
you have not coated the paper too thickly or unevenly and that the paper
feels dry to the touch before it is used. This also avoids getting blue
negatives.

This is probably the simplest, easiest and cheapest of the alternative
processes and it produces prints of great beauty that rival platinum if you
like blue.

Terry

----------