FITTING (Filing Operation)

What is the purpose of filing operation?

• To hold the work firmly in the vice

• To remove burr and clean the face of the cuts

• To remove metal using a rough cut file

• To apply high pressure on the work

How should the file handle be grasped for heavy work?

• With the thumb on the point in line with the file

• With the thumb being on the top of the file

• With the thumb turned to right angles to the direction of the stroke

• With the thumb pointing along the top of the handle

What is the most common method of filing?

• Straight filing

• Draw filing

• Cross filing

• Filing internal curves

When is cross filing used?

• To remove large amounts of metal

• To reduce 'rounding' of the surface

• To remove burr and clean the face of the cuts

• To produce a relatively smooth surface

What is the grip for files needing two-handed operation?

• Grasping the file firmly at each end

• Placing the forefinger on top of the handle in line with the file

• Resting the file handle in the palm with the thumb pointing along the top of the handle

• Grasping the file handle in one hand and the point of the file in the other hand

How should the operator aim to carry the file forward during normal flat filing?

• In a rocking motion causing a rounded surface

• In a zigzag pattern to prevent grooving

• In a circular motion to remove metal faster

• On an almost straight line in the same plane

What is the best way to keep the file cutting?

• Apply too little pressure on the forward stroke

• Apply too much pressure on the forward stroke

• Slide over the harder metals

• Lift the file clear of the workpiece on the reverse stroke

What is draw filing primarily used for?

• To produce a finer finish than straight filing

• To remove small ridges from the workpiece

• To score and scratch the workpiece

• To produce a rough finish

What should be done while using the files to prevent damage?

• Use the files on hardened steel

• Allow the file to rust

• Use the files without handle

• Use the new file first on mild steel

What is the best way to clean the file teeth from clogging?

• Use a file card

• Use a thin hard wire brush

• Coat the file with machine oil

• Dip the file in hydrochloric acid