From: Judy Seigel (jseigel@panix.com)
Date: 07/02/02-11:40:37 AM Z
On Tue, 2 Jul 2002, Breukel, C (HKG) wrote:
> Gum print was aimed at "filling in" the higlights: mixture 0.5 ml gum,
> 0.02 gram (!, long live the micro balans) Burnt Sienna and 0,5 ml
> PotDichromate.
>
> (BTW I realy wonder how people can maintain registration: even after a
> pre-shrink step, and using only 4*5 I could not obtain perfect
> registration)
Cor, I'm not familiar with the Fonteney paper you mention -- but I gather
you didn't preshrink it. Multiple coat gum is done on preshrunk, then
sized, then hardened, paper (most probably), that is, the paper has been
soaked & dried at leat 3 times prior to printing, which does pretty well
stabilize it. Larger than 11x14 inches can still give problems, but there
are strategies -- such as always doing the next coat the same time lapse
after the previous, being careful that the paper lies flat in drying, etc.
etc.
AFAIK, if another coat is planned on top of anything, it's preshrunk.
Sarah van Keuren mentions that for gum over cyano, as do others, tho I
don't recall if Stuart Melvyn, "the best gum printer in -- what was it--
the known universe"? was said to.
Interestingly, in the chapter on gum over platinum in his Pictorialism
book, Paul Anderson advises that any loss of register can be fudged by
covering the errors by pencil. That of course was in the era of soft
focus -- might not wash in today's "microdetail" aesthetic.
Judy
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