Re: Gum hardening -- top down?

From: TERRYAKING@aol.com
Date: 04/05/06-08:52:07 AM Z
Message-id: <23f.9f4b1ed.31653397@aol.com>

In a message dated 5/4/06 3:25:12 pm, zphoto@montana.net writes:

> That sounds like a really odd
> description, but I always felt that the dichromate "fell" to the bottom of
> the layer and "hit" the paper first.
>
> I thought that maybe I had not mixed the dichromate into the gum/pigment
> mixture well enough, but that doesn't seem to be the reason and I continue
> to observe this phenomenon.
>
>

The gum is porous. That is why the dichromate solution sinks.

It does sound though as if you are using too much gum.

Terry
Received on Wed Apr 5 08:52:33 2006

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