RE: Combining Pt/Pd and cyanotype

I have also done a number of these prints. I did not have a significant
paper shrinkage problem for pin registration, possibly because I use
preshrunk (and dried) paper. I could not establish any formulary
relationships for the Pt/Pd to cyano concentrations but used test runs
(Kentucky windage, you might say) of dry Pt/pd as base for the cyanotype
tests. Joachim

-----Original Message-----
From: Marek Matusz [mailto:marekmatusz@hotmail.com]
Sent: Tuesday, January 03, 2006 11:04 AM
To: alt-photo-process-l@sask.usask.ca
Subject: Re: Combining Pt/Pd and cyanotype

Susan,
I do not thnk anybody picked it up. I have done some cyano over palladium
prints. I do palladium layer first, perhaps somewhat lighter then for
palladium only with all the details in the highlights. Then typical
cyanotype solution. I wanted to add cool shadows only in the cyanotype
layer. My exposure for cyanotype were 50 to 70% of palladium exposures.
Since this is a double pass processes you do run into paper shrinkage issues
and negative registration. Depending on you paper and negative size you
might have to preshrink the paper. After some more experimentation I decided
that I like gum over palladium better. It gives me more control and the gum
layer can be taken off if I do not like it, leaving the palladium print
intact for more experimentation.
Have fun with it.
Marek, Houston

>From: Susan Huber <shuber@ssisland.com>
>Reply-To: alt-photo-process-l@sask.usask.ca
>To: alt-photo-process-l@sask.usask.ca
>Subject: Re: Combining Pt/Pd and cyanotype
>Date: Sun, 01 Jan 2006 07:37:38 -0800
>
>I would be interested in hearing if any people have any experience with
>this topic,
>Susan
> ----- Original Message -----
> From: David & Jan Harris
> To: alt-photo-process-l@sask.usask.ca
> Sent: Saturday, December 31, 2005 12:01 PM
> Subject: Combining Pt/Pd and cyanotype
>
>
> A while ago there were some posts about combining platinum/palladium
>with cyanotype. We want to give it a try, but wondered how much to modify
>the exposure of each layer for best results. Can anyone help?
>
> Thanks in advance,
>
> Jan
Received on Tue Jan 3 14:15:44 2006