U of S | Mailing List Archive | alt-photo-process-l | Re: gum arabic

Re: gum arabic

  • To: alt-photo-process-l@usask.ca
  • Subject: Re: gum arabic
  • From: Jack Brubaker <jack@jackbrubaker.com>
  • Date: Sun, 01 Feb 2009 17:14:47 -0500
  • Comments: "alt-photo-process mailing list"
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  • Reply-to: alt-photo-process-l@usask.ca
  • Sender: jwbrubaker@gmail.com

Point well taken.  Jack

2009/2/1 Loris Medici <mail@loris.medici.name>
31 Ocak 2009, Cumartesi, 5:28 pm tarihinde, Jack Brubaker yazmış:
> ... My response was to point out my opinion that the example of gum as a
> pigment binder going back to ancient times is more like our practice of
> printing than an example of a thick layer of gum used as a varnish...

I see. But in my view gum dichromate is more like varnishing, less like
watercolor painting in this context; watercolors are seriously diluted
(something like 1:3 - 1:6 at least, usually even more - think of painters
who use pans instead of tubes...) in painting, so there is much less gum
in a finished watercolor paint when compared to gum dichromate print. (And
think of 3 - 4 layers or more.) A visual proof of this could be the fact
that gum dichromate prints are shiny (especially in the darks and middle
tones) whereas watercolor paintings are not. (Even if so, not to the
extent of gum dichromates.)


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