[alt-photo] Re: coffee and cyanotype

[Paul Viapiano]

Is Rob talking about gum prints or cyanos, or...?

Interesting...

Paul



----- Original Message ----- 
From: "Christina Anderson" <zphoto at montana.net>
To: "Alt List" <alt-photo-process-list at lists.altphotolist.org>
Sent: Thursday, January 12, 2012 7:49 PM
Subject: [alt-photo] coffee and cyanotype


> Interesting post from 2004:
>
>
> From: RHobbs3 at aol.com
> Date: 09/09/04-06:34:42 PM Z
> Message-id: <e5.a9def0.2e7250a2 at aol.com>
> I have used old cold coffee for my first wash. Coffee has an amazing
> collection of acids, which change depending on the darkness of the roast. 
> If I cover
> the print with coffee and let it sit for a minute or five then proceed 
> with
> the wash, my final blue shifts toward gray or black. I suspect the tannic 
> acid
> in the java is what does this.
> For some reason, I get less staining of the paper base this way than I do 
> if
> I make the print first and tone in coffee later.
>
> Rob Hobbs
> Christina Z. Anderson
> christinaZanderson.com
>
> _______________________________________________
> Alt-photo-process-list | http://altphotolist.org/listinfo