TM 9-243
TYPES AND USES - Continued
WARDING FILE
Warding files are tapered to a point for narrow space
filing. They have double-cut faces and single-cut edges.
Warding files are used for lock repair or for filing ward
notches in keys.
CURVED-TOOTH FILE
Curved-tooth files, also known as mill-toothed files, are
generally used on aluminum and sheet steel and on flat
or curved surfaces. They are also used for smooth,
rapid work on bronze, lead, babbitt, zinc, and plastic.
Flat, flexible, curved-tooth files do not have tangs and
are made for easy mounting on a file holder. The file
holder is adjustable for concave or convex surfaces.
Flat, flexible, curved-tooth files come in fine-cut and
standard-cut teeth.
Flat, rigid, curved-tooth files are self-cleaning and used
for filing flat surfaces on cast iron, lead, babbitt,
aluminum, zinc, and plastic. They come in smooth-cut
and standard-cut teeth.
Half-round, rigid, curved-tooth files are flat on one side
and convex on the other. They are used for filing
concave surfaces and bearings. They come with
standard-cut teeth.
SWISS PATTERN FILE
Swiss
pattern
files
are
made
to
more
exact
measurements than American pattern files. They are
primarily finishing tools used on all sorts of delicate and
intricate parts. Swiss pattern files come in a variety of
styles, shapes, sizes, and double and single cuts to
insure precision smoothness.
These files are usually supplied in sets. The most
common set consists of twelve assorted files in a set
which are marking (half-round) (1), square (2), slitting
(3), knife (4), joint (round edge) (5), crossing (oval) (6),
barrette (7), flat (8), equaling (9), half-round (10), three-
square (triangular) (11), and round (12).
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 of delicate mechanisms, and for tool and die work.
Change 2 28-3
