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Cutting speed may be defined as the rate at the workpiece surface, irrespective of the machining operation used. A cutting speed for mild steel of 100 ft/min is the same whether it is the speed of the cutter passing over the workpiece, such as in a turning operation, or the speed of the cutter moving past a workpiece, such as in a milling operation.
Papercutting or paper cutting is the art of paper designs. Art has evolved all over the world to adapt to different cultural styles. One traditional distinction most styles share is that the designs are cut from a single sheet of paper as opposed to multiple adjoining sheets as in collage.
Contexts being excavated are recorded on context sheets which vary in style depending on practitioner but in general share characteristics. Most will have sections for composition of soils or profiles for cuts. it is common practice to have special sheets available to record contexts denoted by; masonry, timber and skeletons listing the many variables that are of interest to the archaeologists ...
In addition, the device must be moved laterally across the work. This is a much slower motion called the feed. The remaining dimension of the cut is the penetration of the cutting tool below the original work surface, reaching the cut's depth. Speed, feed, and depth of cut are called the cutting conditions. [8]
For example, heat may damage the quality of heat treated alloys, and laser cutting is less suitable for highly reflective materials such as aluminum. [2] Laser cutting sheet metal produces flat parts and etches and engraves parts from complex or simple designs. It is used over other cutting options for its quick process and customizable ...
Paper cutters were developed and patented in 1844 by French inventor Guillaume Massiquot. Later, Milton Bradley patented his own version of the paper cutter in 1879. [1] Since the middle of the 19th century, considerable improvements to the paper cutter have been made by Fomm and Krause of Germany, Furnival in England, and Oswego and Seybold in the United States.
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Although a loose sheet of paper is usually too soft to cut the skin, it can be very thin (sometimes as thin as a razor's edge), and can thus exert enough pressure to cause a cut. Paper cuts are most often caused by paper sheets that are strongly fastened together (such as a brand new sheet of paper out of a ream ), because a single sheet might ...