Re: Gum-Platinum / Cyanotype-ceramic
SCHRAMMR@wlsvax.wvnet.edu
Tue, 19 Dec 1995 09:40:36 -0500 (EST)
Prof. Rychelewski (our ceramics instructor) and I tried cyanotype on
ceramics a number of years ago and got essentially the same result
as Judy. viz. upon firing the image essentially dissappeared. I never
pursued this any further. However, I would like to make one point that
might be useful to someone working on this. It is well known amoung
photo-archivists that cyanotypes should NEVER be stored in buffered
folders or containers because the alkali which is used to buffer the
paper will fade the cyanotypes. This got me to thinking about the various
chemical compounds I have seen around the pot shop that are used to
mix various clays and glazes. It seems to me that a lot of them are
bases. So I would think that the first step in making this work would
be to get rid of or neutralize the bases. There are chemical indicators
that will tell you the approximate pH of substances. Universal Indicator
comes to mind. Perhaps consultation with a chemist would be in order.
Bob Schramm
West Liberty State College