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Papel picado for sale at a market in Coyoacán, Mexico City for Day of the Dead. Papel picado coming down from a Mexican church. Papel picado ("perforated paper," "pecked paper") is a traditional Mexican decorative craft made by cutting elaborate designs into sheets of tissue paper. [1]
The first "paper cut" campaign was in June 2009, and each such release has been accompanied by a paper cut project. Initially the project was intended to have Ubuntu developers and users identify and fix one hundred minor bugs that adversely affect the Ubuntu user experience and complete the work to be included in the release of Ubuntu 9.10 Karmic Koala.
Chinese paper folding, or zhezhi , is the art of paper folding that originated in medieval China. The work of 20th-century Japanese paper artist Akira Yoshizawa widely popularized the Japanese word origami ; however, in China and other Chinese-speaking areas, the art is referred to by the Chinese name, zhezhi .
While using high-pressure water for erosion dates back as far as the mid-1800s with hydraulic mining, it was not until the 1930s that narrow jets of water started to appear as an industrial cutting device. In 1933, the Paper Patents Company in Wisconsin developed a paper metering, cutting, and reeling machine that used a diagonally moving ...
The surface of the table has a series of small pinholes drilled in it. Material is placed on the table, and a coversheet of plastic or paper is overlaid onto the material to be cut. A vacuum pump is turned on, and air pressure pushes down on the coversheet to hold the material in place. The table then operates like a normal vector plotter ...
Even liquids can be used to cut things when applied with sufficient force (see water jet cutter). Cutting is a compressive and shearing phenomenon, and occurs only when the total stress generated by the cutting implement exceeds the ultimate strength of the material of the object being cut. The simplest applicable equation is:
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