7.3.8 Cutting Tools Flashcards
What are the types of aviation hand snips?
The commonly used aviation hand snips are straight, curved, and hawksbill.
What is the purpose of straight aviation snips?
Straight snips are used for cutting straight lines and the outside of a curve.
What are the two types of aviation snips based on cutting direction?
Aviation snips cut from right to left or from left to right.
How are aviation snips identified by handle color?
Yellow snips cut straight, green snips curve right, and red snips curve left.
What should be considered when making cuts with aviation snips?
Cuts must be made about 0.8 mm (1/32 inch) from the layout line and finished by hand filing.
What is the primary use of saws in aviation?
Saws are mostly used for separating materials and producing grooves and notches.
What are the common sizes of full-size hacksaws?
Full-size hacksaws range from 6 to 16 inches, with 12 inches being the most common.
What is the preferred tooth pitch for cutting steel with a hacksaw?
14 teeth per inch (coarse) is preferred when cutting steel.
How should hacksaw blades be mounted?
Hacksaw blades must have the teeth pointing forward and are mounted on studs (pins).
What is the cutting direction for a junior hacksaw?
The cutting direction is towards the operator, as the teeth face the handle.
What is the main advantage of a mini hacksaw?
A mini hacksaw is particularly useful in confined spaces.
What is the correct technique for cutting with a hacksaw?
Select an appropriate saw blade, adjust blade tension, clamp the work, and use steady forward strokes.
What materials are most files made from?
Most files are made from high-grade carbon steels that are tempered for strength and durability.
How are files classified?
Files are classified by shape, cut of the teeth, and pitch (grade) of the teeth.
What are the common shapes of files?
Common file shapes include rectangular, square, round, and half-round.
What is the difference between single cut and double cut files?
Single cut files have a single row of parallel teeth, while double cut files have one row of teeth crossing another.
What does the grade of cut indicate in files?
The grade of cut indicates the strength of cut, with coarse files having fewer large teeth and smooth files having many fine teeth.
What is the recommended storage for files?
Files should be stored in a clean, dry environment to prevent rusting.
What should be done to maintain the effectiveness of a file?
Frequent cleaning of the teeth with a wire brush file card cleaner is essential.
What is the importance of securing the work piece when filing?
Securing the work piece prevents movement and scratching during the filing process.
What are the three main filing methods?
The three main filing methods are straight filing, cross filing, and draw filing.
What is Cross Filing?
Cross Filing is where the file is used at an angle across the work piece, suitable for thicker pieces of metal.
What is Draw Filing?
Draw Filing is a method to achieve a smooth finish by using the file sideways, moving back and forth on the work piece. A single cut smooth file is used for this.
How should you file a rounded surface?
For a narrow or partially rounded surface, start the forward stroke with the file inclined downward at approximately a 45° angle, using a rocking chair motion to finish the stroke with the heel of the file near the curved surface.
What is the final operation after filing?
The final operation is de-burring, which involves removing fine slivers of metal hanging onto the edge of the material.
What should be done with burrs and slivers?
Burrs and slivers should be removed with a de-burring tool, not a file, to avoid scratches and personal injuries.
How is a de-burring tool used?
The de-burring tool’s blade is aligned with the edge of the work piece, pressure is applied, and it is moved along the surface with a steady motion and light pressure for optimal results.
