ACRYLIC
In acrylic paint, the
binder is a combination of acrylic and vinyl.
Acrylics don’t really don’t use thinners and painting on a damp surface
or mixing water with the paint is a good way to extend it. Though acrylics can be painted on a variety
of surfaces, prepping those surfaces with gesso ensures the integrity of the
pigment. Synthetic paints like acrylics
tend to be on the translucent side (especially the cheapy brands)but is easily
correctable with multiple layers.
Synthetic brushes work best with acrylic paint, especially the Galeria
brushes which are a designed to have versatility and hold large amounts of
paint (because acrylics dry quicker). There are several ways to use acrylics
including: glazing, sponge application, stippling and layering.
GOUACHE
Gouache is like water color and uses the same combination of
preservatives, plasticizers and gum arabic for the binder. Water is used to thin this media and its
opacity depends on how much precipitated chalk or white is added to the
pigment. Sable brushes are most commonly
used because of their softness. Thick
papers or tinted papers (for effect) are used as a working surface. The techniques of using gouache are very
dependent on how it is mixed and applied to paper. For example, you will see more vibrant colors
if they are ground with pasty adhesives. Also, mixing watercolors and gouache
is a common technique or wetting it with ox gall liquid can create a
flowing/smooth finish.
OIL
Oils use synthetic resins commonly as binders. Turpentine is commonly used to thin oil paint
and extenders include earth-based compounds.
Oils tend to come off very thick and saturated. The best surfaces for
oil paint are canvases or canvas boards but paper and other miscellaneous
surfaces can be used. There are acrylic
and oil primers available to use. Hog
brushes are the best to use because of their thick nature and texturing
abilities however; if you decide to glaze the soft brushes may be
preferable. Most people begin their
paintings with sketches and thinned oil paint that dries quickly. Some people then continue to use brushes,
rags, or palette knives.
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