From: Sandy King (sanking@clemson.edu)
Date: 07/26/03-12:25:09 PM Z
Clay,
No, I have not used Createx pigments with gum, but I have used them
with carbon. I have had some success with them, but several of the
colors appears to contain some oil that rises to the surface when you
pour the pigmented gelatin solution, which of course runs the tissue
unless you invert it for use.
Also, some of the Createx colors do cause hardening of gelatein. I
have used Createx Burnt Umber and it did in fact cause considerable
hardening of gelatin, making it very problematic for carbon use.
Sandy
>On Saturday, July 26, 2003, at 12:43 PM, Sandy King wrote:
>>
>>I agree with Judy on this. As a carbon printer I have tested
>>hundreds of different pigments from a variety of sources, from tube
>>watercolors to automotive supply pigments to Createx to aqueous
>>dispersions available at home supply stores. This experience tells
>>me for a fact that some pigments, or their dispersal agents, harden
>>gelatin and leave a high fog density that makes clean highlights
>>impossible. If this happens with gelatin I strongly suspect it
>>would also happen with gum, and that would result in a stain, an/or
>>make the print difficult to clear.
>>
>>Sandy King
>>
>Just to throw a couple of cents in here, has anyone besides myself
>tried using Createx pigments in a gum coat? Admittedly, I did not do
>any sort of extensive testing with the material, but my first two
>attempts at using Createx burnt umber pigment in a gum coat were SO
>awful that I quickly abandoned the trial and went back to the
>relatively trustworthy tubes of watercolor. The createx burnt umber
>stained horribly and I could never get it to look any thing but very
>grainy. Anybody every make this stuff work?
>
>Clay
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