Which special file is used for narrow work? |
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Explanation:
Pillar files are parallel in width and tapered in thickness for perfectly flat filing. Double cut top and bottom with both sides safe, these are long, narrow files for precision work. Pippin files are tapered in width and thickness, generally of a teardrop cross section and having the edge of a knife file.
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Answer: A knife file is a type of triangular file that looks a lot like a flat file. It has three sides, two of which are wide and taper to a point, like a knife. This file is primarily used by tool and die makers to dress very narrow angles. Round files have circular cross sections.
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