On Sun, 12 Dec 1999, Garet Denise wrote:
> I have ordered some Norland "HiPure" liquid gelatin for testing as a size
> for gum printing. Does anyone have suggestions for sizing procedures?
> Should I use full strength or dilute? Dip the paper or coat with a foam
> brush? Dip in a separate glyoxal bath to harden or mix glyoxal into
> gelatin before placing gelatin on the paper? Any thoughts would be
> appreciated.
Garet, did someone steal your Post-Factory #1? (More favored of thieves
than red Ferraris.) Gelatin sizing is covered in EXQUISITE detail... also
(and MANY times) on this list ... To coin a phrase: see the archive !! But
there's also the fact that individuality comes into play here. Meanwhile
what is "liquid gelatin"? Is it liquid at room temperature? In which
case.... hmmmm.
As for ordinary gelatin-- I've never heard of anyone mixing the glyoxal
into the gelatin, tho that question was asked on the list recently, too...
Glyoxal tends to be a bit tetchier than formaldehyde in the matter of
polymerization, it seems, so I wouldn't be totally surprised if it
hardened the gelatin BEFORE you got it on the page. (Which might solve
the problem with the *liquid* gelatin ! Why not try it & add to the sum
total of human knowledge?0
Judy
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| Judy Seigel, Editor >
| World Journal of Post-Factory Photography > "HOW-TO and WHY"
| info@post-factory.org >
| <http://rmp.opusis.com/postfactory/postfactory.html>
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