The most used grades of files, as recommended by BIS, include:
The most used grades of files, as recommended by BIS, include:
Right Answer is:
Bastard, second cut, smooth, dead smooth
SOLUTION
According to the Bureau of Indian Standards (BIS), these four grades are recommended for engineering files.
- Bastard File: Used for heavy material removal.
- Second Cut File: Ideal for achieving a good finish after initial shaping.
- Smooth File: Designed to remove small quantities of material and provide a good finish.
- Dead Smooth File: Used for achieving a high degree of finish and precise sizing.