How to super harden papers?

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From: Sandy King ^lt;sanking@clemson.edu>
Date: 03/22/05-07:43:43 AM Z
Message-id: <a06020418be65cf393645@[192.168.2.2]>

I am fixing out some photographic papers for use as carbon final
supports but after fixing and drying the gelatin surface is a little
soft for my specific application, even with the addition of a small
bottle of the potassium alum hardener that comes with Kodak Rapid-Fix.

My thinking is that the gelatin might harden more with the addition
of some formalin or glyoxal to the fixer. Does anyone know if this
might work, and if so, have a general guide as to how much to add per
liter of fixer?

Sandy King
Received on Tue Mar 22 07:46:02 2005