Re: Ruined 3rd tricolor gum print! Grrrr...
P.S. Looking at the amounts (before, I was looking only at your
description of the effects) I'm even more sure about the pigment. If
you're using the same amount of thalo as PV19, it's most probably too
much thalo. As I think I said a day or two ago in a different
context, PV19 isn't nearly as strong as thalo. Hope that's helpful,
On Sep 22, 2008, at 8:04 AM, Katharine Thayer wrote:
My first thought, without seeing the thing myself, is that you're
using too much thalo; the flaking, the uneven coating, the
overwhelmingness that you describe (though I might be
understanding that different than you're meaning it) all suggest
too much pigment. I could be wrong; I'd have to see it for myself
to know for sure.
In my experience, a cyan-last order works best, because with the
yellow and red already down, you can watch the color balance and
tonality while developing and take it out when it's "right;" in
other words it's easier to get it right on the first try printing
On Sep 22, 2008, at 6:34 AM, Loris Medici wrote:
I'm trying tricolor gum printing using plain paper negatives.
I start with yellow (Schmincke 208 Aureolin Modern PY151
then I print the magenta (Schmincke 351 Ruby Red PV19 Quinacridone
and everything (tonality, smoothness, color) is good & nice up to
As the last layer, I print the cyan (Schmincke 479 Helio Cerulean
Phtalocyanine Blue) and somehow it's too overwhelming, very
uneven, and it
flakes like crazy!
Pigment amounts are as following:
1. Yellow, pea sized, into 3.75ml gum + 3.75ml dichromate
2. Magenta, lentil sized (read as: half of yellow), same as 1
3. Cyan, lentil sized (same as magenta), same as 1
Exposure times and dichromate amounts are the same for all three
(15mins., 20% ammonium dichromate). I use automatic development
minutes, sometimes a little longer according to how it looks.
I don't know why I'm having this problem but will try to (all
a) Print in the opposite order (1. Cyan, 2. Magenta, 3. Yellow)
b) Use even less cyan pigment to match the color intensity of
c) Try to not panic while struggling to coat an extra even cyan
What can you say? Any ideas on why I'm stuck that way?
Thanks in advance,