#Intaglio printing machine trial#

When the acid bites in around each grain of rosin, the varying tones are produced. Then the plate is ready to be dipped in the acid. This is followed up with a layer of tar or varnish on the sections outside the image.

To make the particles adhere, the plate is heated. This process begins by dusting the plate with fine particles of rosin. It is made up of fine particles and works well for varying tones on a print. The bur is fragile, so the plate can only be used for an edition of around ten to twenty prints.Īquatint, which is another type of ground, resists acid but doesn’t leave a solid coat of ink on the plate. The lines created using the drypoint technique tend to be fuzzy and irregular. This method creates a rough metal bur that will hold the ink. Drypoint prints are also made by scratching the plate’s surface with a needle. When using hard ground, it is more difficult to produce good lines, so they are oftentimes thin and wiry with blunt ends.Īnother type of etching is drypoint. In this way, the lines that were first drawn on the plate will end up being darker than those that are dipped into the acid last.Īlthough either a soft ground or a hard ground can be used to create an etching, the soft ground yields less resistance to the needle, so the line produced feels freer and can resemble a crayon or a pencil. It is also possible to put the plate into the acid successively, by drawing out only one area of the image at a time. By playing around with different concentrations of acid and varying the time the plate is immersed, it is possible to manipulate the intensity and quality of the lines that are produced. The ink is held onto the plate by lines that have been eaten away by the acid. The next step is to dip the plate into a tray of acid, so the acid will bite into the metal that is exposed by the needle’s scratches. With an etching needle, the artist cuts into the layer of resin to expose the metal beneath it, but without scratching into it. To protect the plate from the acid, its back and sides are coated with a layer of varnish. To prepare a metal plate for etching, it is first covered with wax, resin ground or some other substance that is acid resistant. With this technique, an image is incised, or cut, into a plate made from metal such as copper, zinc or steel. In the 17th century, it was one of Rembrandt’s favorite techniques. The Italian term, “intaglio,” means to engrave or to cut into. It’s Pretty Convoluted.Etching is a technique that was developed in the 14th century as a way to decorate armor.

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#Intaglio printing machine trial#

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