Katharine Thayer wrote:
>
> Maria's question led me to go look at my glyoxal papers which I sized on
> February 6, 2005.
>
> I sized four pieces of Fabriano Artistico Extra-White: 2 at .6% (the
> equivalent of 15 ml/liter of gelatin and 2 at 1%, the equivalent of 25
> ml/liter of gelatin. One of each pair I rinsed immediately after sizing,
> the other I did not rinse after sizing.
>
> These were in a little stack in a drawer, which I periodically have
> taken out and rotated the bottom one to the top, like developing sheet
> film in a tray, so each of them has spent some time on the top of the
> stack.
>
> All of these papers are still completely white and indistinguishable
> from a piece of new Fabriano, except for the more open, coarser texture
> that results from having been wet. In color, they are indistinguishable.
I should probably specify that the glyoxal was mixed into the gelatin,
not used as a separate hardening bath. For rinsing, I just dipped the
sized-hardened papers into a sinkful of cool water while still wet,
swished them around a bit, then hung them to dry.
Katharine Thayer
Received on Mon Apr 11 10:45:56 2005
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