TM 9-243TYPES AND USES - ContinuedWARDING FILESWISS PATTERN FILEWarding files are tapered to a point for narrow spacefiling. They have double-cut faces and singlecut edges.Warding files are used for lock repair or for filing wardnotches in keys.CURVED-TOOTH FILECurved-tooth files, also known as mill-toothed files, aregenerally used on aluminum and sheet steel and on flator curved surfaces. They are also used for smooth, rapidwork on bronze, lead, babbitt, zinc, and plastic.Flat, flexible, curved-tooth files do not have tangs andare made for easy mounting on a file holder. The fileholder is adjustable for concave or convex surfaces.Flat, flexible, curved-tooth files come in fine-cut andstandard-cut teeth.Flat, rigid, curved-tooth files are self-cleaning and usedfor filing flat surfaces on cast iron, lead, babbitt,aluminum, zinc, and plastic. They come in smooth-cutand standard-cut teeth.Half-round, rigid, curved-tooth files are flat on one sideand convex on the other. They are used for filing con-cave surfaces and bearings. They come with standard-cut teeth.SAFETYSwiss pattern files are made to more exact measure-ments than American pattern files. They are primarilyfinishing tools used on all sorts of delicate and intricateparts. Swiss pattern files come in a variety of styles,shapes, sizes, and double and single cuts to insureprecision smoothness.These files are usually supplied in sets. The most com-mon set consists of twelve assorted files in a set whichare marking (half-round), square, slitting, knife, joint(round edge), crossing (oval), barrette, flat, equaling,half-round, three-square (triangular), and round.Swiss pattern files are made in seven cuts, Nos. 00, 0, 1,2, 3, 4, and 6. They are most often used for fitting parts ofdelicate mechanisms, and for tool and die work.1.If a file is designed to be used with a handle, do notit bends easily. The body of the file is hard and veryattempt to use it without the handle. Holding thebrittle. A light bending force will cause it to snap.sharp tang in your hand while filing can cause seri-3.ous injury.Do not hammer on a file. This is very dangerousbecause the file may shatter.2.Do not use a file for prying. The tang end is soft and28-3
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