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Marek,
I've even used it straight from the bottle with Fab EW
paper, but it does give the print a semi-matte appearance, kind of like it's
waxed and buffed.
Sometimes I'll use it on the blank paper after a presoak,
and other times I like to use it AFTER the first gum layer.
Here's a tricolor where I used it after 2 layers...printed
yellow, red, SIZE and then blue.
Also, don't forget that Keith Taylor prints those
beautiful Decosse gums in 3 layers and NO size. There is also NO preshrink in
his workflow due to the affixing of the paper onto an aluminum substrate and
therefore keeping registration integrity. So, 3 baths total and no problems with
stain.
My experience seems to bear this out as well (we're only
talking Fab EW here, now)...my paper is preshrunk and I can do 2 layers before
getting an iffy 3rd layer. That's why I've tried doing 2 layers and THEN sizng
with the PVA.
Paul
----- Original Message -----
Sent: Monday, October 12, 2009 6:31
PM
Subject: PVA size concentration for gum
printing
All,
learning all the time,
I have receives some off list
posts that higher Gamblin PVA concentrations work well on different papers (as
high as straight from the bottle). I just re-run a test with 1:1 dilution with
water on a presoaked Fabriano Artistico Xtra white. Paper was presoaked,
dired and coated with 20cc PVa water 1:1 mix/sheet. The test strips are
being developed but they have much less stain/faster developmet to
clear the stain, then previously reported 1:2 dilution. ANd of course quick
dip and dunk in a chlorox solution works miracles as well. So before you
report it is total b-s, I would urge you to pre-shrink the paper and thern try
different dilutions of Gamblin PVA if you are inclined to experiment. ANd
every gum printer is.
Marek
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