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Paper knives are no longer in common use, except perhaps by antiques enthusiasts. [2] An electric version of a letter opener is also available, which uses motors to slide the envelopes across a blade, and is also able to handle increased numbers of envelopes, but the blade can slice into the contents of the envelope and damage them.
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.
Finnish outdoor utility knife, puukko Retractable blade knife with replaceable utility blade A utility knife is any type of knife used for general manual work purposes. [1] Such knives were originally fixed-blade knives with durable cutting edges suitable for rough work such as cutting cordage, cutting/scraping hides, butchering animals, cleaning fish scales, reshaping timber, and other tasks.
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X-Acto is a brand name for a variety of cutting tools and office products owned by Elmer's Products, Inc. These include hobby and utility knives, saws, carving tools and many small-scale precision knives used for crafts and other applications. An X-Acto knife may be called an Exacto knife, utility knife, precision knife, or hobby knife.
OLFA Corporation (オルファ株式会社, Orufa Kabushiki-gaisha) is a Japanese manufacturer of utility knives, founded in 1956 in Osaka, Japan.The name is derived from the Japanese words oru (折る, bend and break) and ha (刃, blade).
there is a difference between a guillotine (one blade which rests in a stop after cutting, cuts like a knife) and paper cutter (two blades, produces shear force like a scissors). — Preceding unsigned comment added by Briesas ( talk • contribs ) 22:41, 12 November 2012 (UTC) [ reply ]
To achieve optimal surface speed and cutting conditions, burrs are rapidly rotated at high speeds, often in the range of thousands or tens of thousands of RPM, which is typically the maximum speed supported by a given spindle. The cutters depicted in the image, being made of tungsten carbide, can withstand and operate at these elevated speeds.
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