From: Christina Z. Anderson (firstname.lastname@example.org)
Date: 04/14/03-12:41:51 PM Z
Tube. I have read, and keep hearing, that powder pigment gives less
staining problem so...the only way to relate the two I have found is Scopick
says to use 1g powder pigment to 6ml gum whereas 1g tube pigment to 3ml gum,
but I have not visually tested this side by side to see the strengths.
Maybe another thing to try....
And as far as gamboge, Katharine: my gamboge is lightfast but you are
absolutely right, the name is applied to many different colors. The brand I
am using is Graham. I also wonder why watercolorists in particular still
use alizarin crimson (and gamboge) when they are definitely not lightfast.
Why paint if it won't last?
And you are also right in that gamboge and raw sienna are not
interchangeable. In looking at my side by side test, they are similar in
hue but the raw sienna is milky and the other transparent. This made me
rethink a couple pigments I have on my pigment chart in my soon to be
manual--I have that Venetian Red and Q Burnt Scarlet (DS) are
interchangeable, but really they aren't. One is clear, transparent, and a
bit bricker red (the former) and the latter--a lovely color, is opaque.
Hence performance would be way different even tho the colors are comparable
and I have to watch saying that "you don't need both" on your palette when,
in fact, you may. Thanks for the heads up.
----- Original Message -----
From: "Lisa Reddig" <email@example.com>
To: "Alternative" <firstname.lastname@example.org>
Sent: Monday, April 14, 2003 11:22 AM
Subject: Re: Mixing a light pigment for gum
> Are your ratios with powder or tube pigments?
> I am using powder. My starting point is .5g pigment in 10 ml gum and 10
> pot di, I go up or down on the pigment according to how dark or light I
> > Lisa,
> > Mix less pigment but keep your gum arabic ratio to dichromate still
> > high. In other words, as long as the gum keeps the solution viscous
> > you shouldn't have any problem. I was working with Quinacridone pink
> > yesterday at 3.5g pigment/12ml gum, then 1.75/12, and then .75g/12 and
> > all 1:1 with am di upon exposure, and the higher strength one is so
> > overpoweringly magenta (good for CMYK) but the least is baby butt pink
> > very pretty. That was one thing I found good. The actual thing I was
> > testing was different acrylic sizings with this pigment which tends to
> > stainy, and that was a bust--either the sizing was too much and I could
> > brush the gum right off, or it was too little and the gum stained in
> > in the bumps of the paper, or the 2 coats of 1:10 was so uneven that I
> > spotty leprous naked bodies. (I tested 50/50 matte medium, 1/10 matte
> > medium 1 coat, and 1/10 matte medium 2 coats) Back to the drawing board.
> > Chris
> > ----- Original Message -----
> > From: "Lisa Reddig" <email@example.com>
> > To: "Alternative" <firstname.lastname@example.org>
> > Sent: Monday, April 14, 2003 7:54 AM
> > Subject: Mixing a light pigment for gum
> >> Hello,
> >> I am trying to figure out how to make a really pale/light layer of
> > on
> >> a gum. As everyone has been saying, using too little pigment to gum
> >> causes stain, which I have experienced. Is there some white or clear
> >> pigment that can be mixed with a color to make it paler, and yet still
> > print
> >> properly.
> >> I have added a color called "Whiting", it doesn't make it lighter, it
> > makes
> >> it more opaque, which actually makes it darker because less light comes
> >> through from underneath it, and so therefore it looks darker.
> >> I can't expose less, because that causes it to wash out of less exposed
> >> areas. I want an overall coverage, only really light.
> >> Thanks
> >> Lisa
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