Re: a newbie's first post: gum, temperaprint, oil printing, sizing, and computer negatives

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From: Carole Johnson (cjohnson@sheltonstate.edu)
Date: 06/14/03-10:19:10 AM Z

----- Original Message -----
From: "Keith Gerling" <keithgerling@att.net>
To: <alt-photo-process-l@sask.usask.ca>
Sent: Saturday, June 14, 2003 11:08 AM
Subject: RE: a newbie's first post: gum, temperaprint, oil printing, sizing,
and computer negatives

> On Fri, 13 Jun 2003, Judy wrote:
> > There's
> >also the fact that we don't know what the hell Demachy was using for gum.
> >He probably mixed it himself, it may have been sour, which changes its
> >behavior
>
> How does being sour change its behavior? I recently purchased a gallon
of
> 100% pure gum. 14 baume. It was crystal clear when I opened it last
week,
> but now its turning yellow and I suspect its beginning to "sour". Still
> working fine now, but what should I expect?
>
> Keith
>
>
> website: http://www.gumphoto.com
>
>
>
>

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