From: William Linne (photoassistant@hotmail.com)
Date: 04/30/02-10:12:09 PM Z
I thought alum of any sort was almost impossible to clear from paper.
Wouldn't that affect the longetivity of prints?
William
----- Original Message -----
From: "Christina Z. Anderson" <zphoto@montana.net>
To: "Alt Photo List" <alt-photo-process-l@sask.usask.ca>
Sent: Tuesday, April 30, 2002 8:15 PM
Subject: chrome alum
> Sandy King (or anyone else in the know), a while back you said you
> usually use chrome alum for hardener, sometimes potassium alum, too. You
> mentioned mixing 2 g of chrome alum (the purple stuff) per 1000 ml of
> gelatin solution. This is about 1/2 tsp. How much *gelatin* do you use
in
> your 1000 ml--my formula calls for 2 tsp Knox gelatin, does yours, too?
> I'm starting to work with tiles and glass to get liquid emulsion to
> stick, and a student wants to try to sub glass with the chrome alum
solution
> for gum; she tried it already with varnish and a mild sanding and the gum
> totally came off. She was inspired by my telling her a while back about
> Sarah Van Keuren's students doing gum on glass. Short of a sandblaster,
> we're going to keep trying.
> Chris
>
>
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