Re: unexpected pigments for gumprinting

Claude Seymour (cseymour@cap.gwu.edu)
Sat, 14 May 1994 11:10:46 -0400 (EDT)

Try looking in your library card catalogue under _pigments_. I have
_Colors From The Earth, The Artist's Guide To Collecting, Preparing and
Using Them_ by Anne Wall Thomas, Van Nostrand Reinhold Company,1980 in my
personal library. There is also similar book in my library that I
can't immediately put my hands onto.

Claude Seymour

On Sat, 14 May 1994, Dan Shapiro wrote:

> As part of a project to develop an alternate gum dichromate
> process, I am looking for commonly available, but unexpected
> sources of pigments... things available from rocks, plants,
> fireplaces, etc., just not out of a tube. Does anyone
> have ideas about what might work?
>
> My experiments to date suggest that it has to be finely powdered,
> non absorbent, densely colored, and capable of going into
> suspension with the colloid (e.g. gum arabic) - whatever
> that entails. Sam Wang (from this list) suggested that
> the ingredients *in* watercolors might be a good place to
> start. Anyone know what they are, and if they are available
> in the sense I describe?
>
> Dan Shapiro
> (dan@lis.stanford.edu)