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HAND FILES /ENGINEERS FILES - 2

V. Ryan © 2006 - 2009

 

The safe edge of a file does not have teeth. This is extremely useful when filing in corners as shown in the diagram below. The safe edge is placed into the corner and because it is smooth it does not damage the surface of the metal.

 

There are many different shapes / sections of files, some are shown below. They are used for a variety of types of work. Files are classified according to their length, section / shape and cut (tooth shape).

 

HAND FILE: Used for general filing of metals such as steel. They are rectangular in section and are the most common type of file used in workshops.

   

HALF ROUND FILE: Used for filing curved surfaces. A normal hand file with its flat cutting edges is unsuitable for filing curved surfaces. However, the half round file has a curved surface which is especially useful for filing internal curves.

   

THREE SQUARE FILE: Is triangular in section and very useful when filing ‘tight’ corners / angles. The sharp edges allow the file to fit into corners when filing.

   
 
 

KNIFE FILE: Knife files are very useful when filing where there is little space. Knife files are very thin and can fit into small gaps.

   

SQUARE FILE: The square file is quite thin and fits into corners well. They can be used to file slots in metal or for filing where there is little space.

   

Files are often graded according to the roughness / smoothness of cut. The file that has the least harsh teeth is graded as ‘very smooth’. The most abrasive of files is graded as ‘rough’. Some of the grades of cut are shown below.

   
   
GRADES OF CUT - FILES
   
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