The curious thing is that the Dalamar yellow in dispersion which I
described in an earlier message did work fine for both gum and
casein printing. I had a pint of the stuff, gave several ounces of
it to my colleague Sam Wang, and he had very good success with it
in both gum and casein printing. So don't throw good pigment
away. Somebody can find a use for it!
> > >
> > I once used watercolor pigments but don't any longer. For color
> > work the cyan and magentas lack the transparency of pure pigments, and
>
> When you say you used watercolor *pigments*, I take it you mean watercolor
> *paint* from tubes? (Pigments may all be the same, no?)
>
>
Yes, that is what I mean, the stuff in the little tubes.
>
>
> > As for dispersions, nothing special. I use 35g of sugar per 1000ml of
> > gelatin solution, and 10-15ml of glycerine. I first grind everything
> > up very carefully with a pestle and mortar, then mix in a blender at
>
> About how long? What's "careful"? You grind wet or dry?
>
I grind in the pestle and mortar until the gelatine/pigment/glycerine
mixture is very smooth, then add the rest of the gelatine solution,
put in the blender on medium speed and let it go for 2-3 minutes,
sometimes as much as five.
>
> Sandy, if you've elaborated on this already, can you give me the date?
> Otherwise, when you say "dispersions," do you mean your gelatine-pigment
> mix for coating tissue? You don't mention amount of pigment, I suppose
> that varies.
>
Yes, pigment quantity does vary a great deal, but I will give you
one example. There is a kind of 19th century warm red/brown color
that I really like, resulting from one of the toning procedures of
the period. In trying to duplicate that color I came up with the
following carbon tissue formula. It gives a very rich, deep, very
warm/red/carmine color. For 1000ml of coating solution I use the
following pigment amounts:
3g Crimson Carmine
3g Pure Pigment Yellow
4g Pure Pigment Brown
2g Lampblack
These are all Createx pigments from ColorCraft, but they could be
reproduced with other pigments I am sure.
Hey, hope this is of interest to someone.
Sandy King