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1.1.1 Types of Files: Type of File Description and Use

The hand file is rectangular in cross-section, tapering slightly in thickness towards the tip. It has double-cut teeth on the faces, single-cut teeth on one edge, and no teeth on the other edge, known as the safe edge.

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MRINAL GAUTAM
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121 views1 page

1.1.1 Types of Files: Type of File Description and Use

The hand file is rectangular in cross-section, tapering slightly in thickness towards the tip. It has double-cut teeth on the faces, single-cut teeth on one edge, and no teeth on the other edge, known as the safe edge.

Uploaded by

MRINAL GAUTAM
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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The hand file is parallel in width and tapering slightly in thickness, towards the tip.

It is
provided with double cut teeth on the faces, single cut on one edge and no teeth on the other
edge, which is known as the safe edge.

1.1.1 Types of files


Files are classified according to their shape, cutting teeth and pitch or grade of the teeth,
Figure shows the various types of files in use based on their shape.
Type of file Description and Use
1. Hand file Rectangular in section and tapered in thickness but parallel in
width. The faces carry double cut teeth and one of the edges
single cut. The other edge, known as safe edge, does not have
any teeth and hence this file is also known as safe edge file. It is
useful in filing a surface which is at right angles to an already
finished surface.
2. Flat file It is rectangular in section and tapered for 1/3 length in width
and thickness towards the tip. The faces carry double cut teeth
and the edges carry single cut teeth. It is a general purpose file.
3. Square file It is square in section and carry double cut teeth on all the four
faces. It is tapered for 1/3 of its length towards the point. Square
files are used for filing corners and slots. It is also used to cut
keyways.
4. Three square file It is of equilateral triangular in section and tapers towards the
tip. The faces are double cut and the edges sharp. These files
are used to file angular hole, and recesses. Used for sharpening
wood saws.
5. Round file It is tapered for 1/3 length with double cut on large coarse grades.
Used for filing out round, elliptical and curved openings.

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