Why rub the paints
Typically, the dyes are a fine powder. Of course, there are also liquid dyes, but the liquid dye is applicable only to liquids. For dry substances you need a dry dye. If the dye is used for the production of paints or, for example, how I use colored pigments to impart a certain color to the gypsum, then in this case the paints have to be grinded.
The physics of the dyeing process. What color you need to add a colored pigment. The process of staining does not imply the coloration of the substance itself, but only the mixing of the basic substance with the colored pigment. Typically, the pigment standard for painting up to a maximum of 10%. If you add more pigment - this can affect the properties of the final product. Suppose we decided to add 5% of the pigment, in my case to the cast. Even if we mix it in some mechanical way, we still will not get the pigment evenly distributed among the substance. Conditionally, we need one part of the dye in twenty parts of the substance. Pigments or paints are finely ground substances, where the particles have a size of a few microns. If the pigments from which the paints do not have a fine grinding, they must be rewound, for example, in a mortar into a finely dispersed state. This will promote uniform mixing and obtaining smooth shades of colors. If in my case the pigment already has fine grinding, but it requires uniform distribution throughout the substance. This is achieved by rubbing. The fact is that the mechanically mixed and frayed pigment in appearance will look the same. And it is possible and with mixing with the liquid, you also will not notice the difference. But if the pigment is not distributed evenly, then the final color will not be uniform. Therefore, everything is rubbed to the smallest particles, which in turn distributes the pigment evenly. Addition of liquid pigment does not distribute by substance. Pigment separately, substance separately.
The mortars do not grind through a 200-mesh sieve. Result on the photo.
In conclusion, I want to note why all the colors are white and only then color in a certain color. Why not make the basis for dyeing transparent. As I noted earlier, the amount of pigment is not great. If you even add 10%, then this may not be enough to make the base color. In light you can see the uniformity of light. But really it will be, to resemble a colored suspension of small particles in the void. Such paint, not only does not close anything in place, but will not have enough brightness (intensity). The white base itself is already a source of bright light. It remains for us to only paint it. The white painted paint will be ten times brighter - 9 pieces will give a white color and one part our pigment. With a transparent base, only the pigment will glow.
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