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Wet-on-wet, or alla prima (Italian, meaning at first attempt), direct painting or au premier coup, [1] is a painting technique in which layers of wet paint are applied to previously administered layers of wet paint.
A primer (/ ˈ p r aɪ m ər /) or undercoat is a preparatory coating put on materials before painting. Priming ensures better adhesion of paint to the surface, increases paint durability, and provides additional protection for the material being painted.
A pounce pot (or sprinkler) at the London Science Museum. Pounce [a] or sand [b] is a fine powder, most often made from powdered cuttlefish bone or sandarac resin, that was used both to dry ink and to sprinkle on a rough writing surface to make it smooth enough for writing.
A 6th-century encaustic icon from Saint Catherine's Monastery, Egypt.. Encaustic painting, also known as hot wax painting, is a form of painting that involves a heated wax medium to which colored pigments have been added.
Sand art is the practice of modelling sand into an artistic form, such as sand brushing, sand sculpting, sand painting, or creating sand bottles. A sandcastle is a type of sand sculpture resembling a miniature building, often a castle. The drip castle variation uses wet sand that is dribbled down to form organic shapes before the sands dries.
The underpainting or ground beneath these was usually white (typically gesso coated with a primer), allowing light to reflect through the layers. But van Eyck, and Robert Campin a little later, used a wet-on-wet technique in places, painting a second layer soon after the first.
Kinetic sand in a box as an office toy. Hydrophobic sand (or magic sand) is a toy made from sand coated with a hydrophobic compound. The presence of the hydrophobic compound causes the grains of sand to adhere to one another and form cylinders (to minimize surface area) when exposed to water, and form a pocket of air around the sand. [1]
In the wet state, the primer is stable; a pellet of wet primer is placed in the shell and simply spun around to cover the full extremes of the rim. (For more on the exact process and one set of chemical compounds that have been used successfully, see U.S. patent 1,880,235 , a 1932 Remington Arms patent by James E. Burns.)