Re: Gum: Supersize it

From: Joe Smigiel ^lt;[email protected]>
Date: 12/22/04-05:58:52 AM Z
Message-id: <s1c91b51.033@gwmail.kvcc.edu>

>>> rs@silvergrain.org 12/21/04 10:53 PM >>>
> ...Also, dichromate diffused from your gum layer to the sizing layer
can
give the gelatin size an additional hardening effect if the area is
exposed. Chromium (III) is a more effective hardening agent than
aluminum ion.

So, what you described naturally leads to a question what happens if
you increase the degree of hardening to the gelatin sizing layer.

--
Ryuji Suzuki<
That's exactly what I'm suggesting and pondering based on my recent
observations.  I've not read about this additional hardening effect in
the standard texts on gum nor do I recall the topic of chromium
hardening of gelatin being discussed on this list.
Joe 
Received on Wed Dec 22 05:58:02 2004

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