From: Darryl Baird (dbaird@umflint.edu)
Date: 07/28/03-09:54:09 PM Z
Yes, but we need the image as clear as possible for ease of viewing
stacked imagery.
Darryl
Vincent Dobson wrote:
>Have you thought to etch the glass surface first - say with hydrochloric
>acid?
>
>Vince Dobson
>Visions In Nature
>www.VisionsInNature.com
>
><:)-----Original Message-----
><:)From: Darryl Baird [mailto:dbaird@umflint.edu]
><:)Sent: Monday, July 28, 2003 5:31 PM
><:)To: alt-photo-process-l@sask.usask.ca
><:)Subject: Now for something completely different (from gum)
><:)
><:)
><:)Well not exactly different, but a switch in sensitizer... cyanotype in
><:)gum arabic.
><:)
><:)During a testing phase my wife Janet and I are conducting (for an artist
><:)book project), we decided to make transparent cyanotypes. Surfaces we
><:)tested include silk, vellum, hand-waxed papers, and glass. We've gotten
><:)more excited about glass than others, but vellum is easy to pull off and
><:)almost transparent enough for the project... a keeper certainly, but for
><:)later. Getting the cyanotypes onto the glass proved more problematic. So
><:)far, mixing cyano with gum arabic provided the best. most even coating
><:)and images. The problem lies with "developing" the image after exposure.
><:)The whole emulsion layer tends to wash (float) off during immersion in
><:)water.
><:)
><:)Any thoughts? How can I harden the gum or improve its "grip" on the
><:)glass surface? Could I lightly spray the image with water to removed
><:)unexposed cyano? The image looked really good according to janet... I
><:)was out getting some mulch wouldn't you know it.
><:)
><:)--Darryl Baird
><:)
>
>
>
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