Re: cyanotype and silver image (was Re: Cyanotype toning and lead acetate.)

Here are some of my notes, Ryuji:

One student did a grossly overexposed VDB, essentially a brown square, and
did the cyano over it and it was gorgeously weird, but certainly not a
perfect print. I can send it to you offlist.

The one that used the gesso did VDB overexposed, two coats of gesso acrylic,
matte medium and water in equal parts on top of that, then cyano on top
overexposed. It amazed me that even through the gesso coating the chemistry
was able to alter the VDB below.

Most found that the best way was to do the cyanotype first, then a VDB on
top, and even misregister it. For some reason misregistration looks good.
Also, diluting the VDB on top of the cyanotype and a return to an acid bath
for the combotype after everything is done, to return the blue of the
cyano..

But my guess is for a combotype that the better way to go (I mean, a
brownprint and a cyanotype) would be pt/pd and cyanotype over. I know I've
seen Sam Wang's duotone palladium/cyanotypes made with color separation
negatives and they are really beautiful, an odd tone where it looks like a
desaturated color image. And these combotypes of VDB and cyanotype don't
appproach that fineness.
Chris
----- Original Message -----
From: "Ryuji Suzuki" <rs@silvergrain.org>
To: <alt-photo-process-l@usask.ca>; <zphoto@montana.net>
Sent: Saturday, April 22, 2006 10:15 PM
Subject: cyanotype and silver image (was Re: Cyanotype toning and lead
acetate.)

> From: "Christina Z. Anderson" <zphoto@montana.net>
> Subject: Re: Cyanotype toning and lead acetate.
> Date: Fri, 21 Apr 2006 07:59:20 -0600
>
>> I had the students this semester do a combotype assignment of VDB or
>> agyrotype on top of or below cyanotype. When I polled the students
>> this week about which assignments to throw out, they unanimously
>> chose that one, because both of those are a pain to combine. The
>> cyanotype would completely disappear due to the alkalinity of the
>> fix or the VDB would disappear due to the potassium ferricyanide of
>> the cyanotype. I happened to really like a number that they
>> produced, and the ones that were most successful had a layer of
>> diluted gesso between the two.
>
> Do you have a preferred order of the two, if both worked equally well?
>
> If you used diluted gesso in betwee, any order would work?
>
Received on Sun Apr 23 07:51:02 2006