Nov 28, 2006· Egg Tempera Class at the VA: the pigments and the grinding Following on from yesterday's post about last week's Egg Tempera class at the VA, today's post is going to deal with the pigments we used and the grinding process.
The role of grinding resins Commercially available pigments and extenders are supplied to paint factories as agglomerates. The grinding process incorporates these solid materials into the .
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Nov 28, 2006· Grinding continues until the pigment mix is the consistency of thick cream. The egg tempera mix dries very fast on the grinding plate and it can be scraped down and reused for the next pigment very easily.
Pigment inks use tiny particles of colored material to provide ink color, rather than paperstaining dyes. Pigment inks are comprised of tiny, encapsulated particles that sit on top of the paper, instead of being absorbed into a paper is fibers, which is what happens with dyes.
Some of the dyes used historically to make pigments are: madder, brasilwood, kermes, indigo, saffron, and folium. To make pigments from minerals, you find a rock with a pretty color and crush it with a hammer until it is small enough to grind in a mortar, then a final grinding is done on a .
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An ink's color is a function of the pigment used, and an ink's other optical properties are primarily determined by the pigment characteristics. An important consideration is color matching, or the ability to precisely duplicate another color.
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If solids, especially pigments, are not broken down into smaller particles and spread evenly throughout the liquid base, the result is a poor paint quality.
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INK ADDITIVES DEERS 3D = 3D polysiloxane e = Aqueous emulsion Deers Surface active agents (surfactants) especially emulsifi ers, wetting and dispersing agents are used to emulsify and stabilize hydrophobic substances binder parti .
The first step to making a pigment would be to pulverize and powder the substance. You may need to start with a hammer to brake it up and then grind it down finer with a mortar and pestle. Forcing it through a variety of sieves or screens may help separate finer particles for further grinding.
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