U of S | Mailing List Archive | alt-photo-process-l | Re: Demachy and red chalk

Re: Demachy and red chalk

Hi Chris et al,
Maybe you remember the two images i send sometime ago:


an oilprint versus a gumprint.
For the gumprint i used a pigment 'kalkrood' (must be clear that it is 'chalk red').
cheers,
Henk





On 23 mei 2009, at 4:38, Christina Z. Anderson wrote:

The print on my website is a gum print of Demachy's.
 
Here is a URL for powdered pigment, Indian Red, and Sennelier red ochre.
 
 
 
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Christina Z. Anderson
http://christinaZanderson.com/
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----- Original Message -----
From: ender100
Sent: Friday, May 22, 2009 7:14 PM
Subject: Re: Demachy and red chalk

Chris,

I think you are right.  If I remember, the Red Chalk or Sanguine was a special chalk that had a lot of iron oxide in it.

Were the Demachy prints in this color gums or photogravures?
On May 22, 2009, at 8:10:22 PM, "Christina Z. Anderson" <zphoto@montana.net> wrote:

Henry,
Try Venetian red, Indian red, or red ochre.  It was a red iron oxide pigment if I remember correctly. One recipe calls for 3 g. Venetian red powder to 1/2 oz. gum. Another calls for a pigment called "light red" which I know was available about 10 yr ago anyway.  But Venetian Red is a nice brick-y color that you'd be happy with. My notes say this:  "For instance, a Venetian red or red ochre color  was used to approximate the rust colored conte crayon portraits." 
Chris