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single-cut file

British  

noun

  1. a file with teeth in one direction only: used for filing soft material

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

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The work is rotated considerably faster for filing than for turning, and the entire surface is filed by a flat, single-cut file, held as shown in Fig.

From Project Gutenberg

The "mill file," a very common form, is a flat, tapered, single-cut file.

From Project Gutenberg