From: Joe Smigiel (jsmigiel@kvcc.edu)
Date: 02/24/03-01:39:57 AM Z
Hi Chris,
Regarding the following I believe gum arabic is often used in watercolor painting to produce exactly the lifting effect you describe. The two common "mediums" added to watercolors are ox gall liquid which is used to facilitate dispersal and produce smoother washes, and gum arabic which is used to allow lifting of pigment. This seems in line with what Demachy is proposing in his test, i.e., more gum, less stain.
Joe
>>> zphoto@montana.net 02/24/03 00:53 AM >>>
(snip)
From watercolor experience, there are, of course, many pigments that
cannot be "lifted" with water application--once they're on the paper they
are there, either fully or faintly--depending on pigment type or paper
absorbency. However, you don't use gum arabic while watercoloring usually.
(snip)
Chris
(snip)
>
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