From: dina Fraioli (ladyoflemon@hotmail.com)
Date: 01/16/03-07:48:29 PM Z
I remember having this same problem with my van dykes when I first started
to do them. I was using watercolor paper and a bad brush...It turns out when
I started to use to glass rod and some nice Cranes paper, I made GOOD van
dyke browns and got rid of that silver deposit on my images.
-dina
>From: Judy Seigel <jseigel@panix.com>
>Reply-To: alt-photo-process-l@sask.usask.ca
>To: alt-photo-process-l@sask.usask.ca
>CC: alt-photo-process-l@usask.ca
>Subject: Re: Vandyke brownprints - silvery deposit
>Date: Thu, 16 Jan 2003 20:32:27 -0500 (EST)
>
>
>
>On Thu, 16 Jan 2003, Neil Miller wrote:
>
> > I make three solutions up, each with 35ml of distilled water. (A) has
> > 10g of green ferric ammonium citrate, (B) has 1.5g tartaric acid and (C)
> > has 4g silver nitrate. All are well stirred until dissolved. (A) is
> > added to (B) and well stirred then (C) is added drop by drop while
> > stirring. The solution is left to age, filtered, then applied with a
> > hake brush or a foam applicator. The paper is left to dry in a warm,
> > dark room overnight or is force-dried with a fan heater. All work takes
>
>
>Neil, Some papers are more susceptible than others to what we've generally
>called "plating out" -- we used to think it was Strathmore this or the
>other that. But I have NEVER seen it when there was no heat drying.
>
>And any forced heat drying is likely to bring it on.
>
>Once we realized that heat drying was flattening the print range and
>stopped, presto -- no more plating out.
>
>Judy
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