Identify the type of file shown in the given figure.

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ALP CBT 2 Electrician Previous Paper: Held on 22 Jan 2019 Shift 1

Answer 1

The teeth of a file are formed by cuts made on its face. Files have cuts of different types.

Types of cut:

Basically there are four types: Single cut, Double cut, Rasp cut, and Curved cut.

Single cut File:

A single cut file has rows of teeth cut in one direction across its face.
The teeth are at an angle of 60° to the centerline.
It can cut chips as wide as the cut of the file.
Files with this cut are useful for filing soft metals like brass, aluminum, bronze, and copper.

Double cut file:

A double cut file has two rows of teeth cut diagonal to each other.
The first row of teeth is known as OVERCUT and they are cut at an angle of 70°. The other cut, made diagonal to this, is known as UPCUT. and is at an angle of 51°.
This removes stock faster than the single-cut file.

Rasp Cut File:

The rasp cut has individual, sharp, pointed teeth in a line, and is useful for filing wood, leather and other soft materials.
These files are available only in half-round shape.

Curved cut file:

These files have deeper cutting action and are useful for filing soft materials like- aluminum, tin, copper, and plastic.
The curved cut files are available only in a flat shape.

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