From: Christina Z. Anderson (zphoto@montana.net)
Date: 03/08/03-12:57:41 PM Z
OHHH, Ed, I'm sorry. I checked my notes and you are right. My bottle of am
di was mixed 5 yr ago, and is 12g to **50** ml water, or a 24%. So I do
think that it is overexposure timewise, not dichromate wise.
Chris
----- Original Message -----
From: "Ed Buffaloe" <EdBuffaloe@UnblinkingEye.Com>
To: <alt-photo-process-l@sask.usask.ca>
Sent: Saturday, March 08, 2003 11:36 AM
Subject: Re: First Gum Print
> Hmm. I thought you had used 24% dichromate. I really think what I have
is
> an overexposure. I'm going to try soaking for 3 or 4 days and see what
> happens.
>
> ----- Original Message -----
> From: "Christina Z. Anderson" <zphoto@montana.net>
> To: <alt-photo-process-l@sask.usask.ca>
> Sent: Saturday, March 08, 2003 12:11 PM
> Subject: Re: First Gum Print
>
>
> > Ed, did you get my jpeg? Did you get it to work for you? I am pretty
> sure
> > your problem is that you are using Fabriano Uno, not Rives, brushing too
> > thick a coat, and/or overexposing too much. My exposure was 12 and 24
> > minutes under UV and both worked. I brush developed with a hake brush.
> My
> > lamp black was D Smith. But my prints all developed out in well under
an
> > hour. I used D. Smith gum, and a did I say 12% solution of am di. OH,
my
> > light unit is the Jon Edwards box with BL bulbs. I would wager a bet
the
> > biggest problem is overexposure, because if I was able to do this high a
> > ratio with 5 different pigments, I would think it should work. I could
> scan
> > the other pigments, too, and send you a jpeg.
> > I mixed the gum/pigment equally with the sensitizer. Now I am
going
> to
> > weigh inches of worms of pigment and see how that relates...
> > Hey, guess what Arnold Gassan says: (my last bits of gum research
> were
> > completed today) that, contrary to popular opinion, gum *is* sensitive
> when
> > wet.
> > OH, and Judy, I have another varnish for ya, from Abney's
Platinotype
> > book (1898) by way of Vidal's article in the following mag (1886): 1/2
oz
> > borax, 1 dram sodium carbonate ( 3.6ml of powder? How is a liquid
> > measurement made of a powder??) in 10 oz water. Add 2 oz. white
powdered
> > shellac. Boil until the shellac dissolves (Photographic News p. 829).
> > OR, burnish with Castille soap dissolved in alcohol. These are
both
> > platinum methods of gloss, not specifically related to gum.
> > Chris
>
>
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