- Answer each group of questions before continuing lesson.
The hammer most commonly used by mechanics is the
What type of wrench is designed to use interchangeable handles?
The size of a screwdriver is determined by the
length of the blade.
overall length of the screwdriver.
width of the tip should equal the length of the screw slot.
What should be remembered when using a screwdriver?
Use the shortest screwdriver available
Use soap on machine screws to drive screws easier
Width of the tip should equal the length of the screw shaft
Which pliers are considered as special purpose pliers?
Slip joint combination
Which type vise usually has the smallest holding capacity?
Clamp base bench
Bench and pipe
a. General. Edged handtools are designed with sharp edges for working on
metal, wood, plastic, leather, cloth, glass, and other materials. They are used
for cutting, punching, scraping, chiseling, filing, etc. Most edged tools have
hard cutting edges or points and require extreme caution when using.
b. Files. Files are used for cutting, smoothing off, or removing small
amounts of metal. Files are made in various lengths, shapes, and cuts, and spacing
of their teeth. Every file has five parts: point, edges, face of cutting teeth,
heel or shoulder, and tang (fig 33).
(1) Types of files.
File teeth characteristics.
(a) Single cut. Single cut files (fig 34) have a single set, diagonal
row of teeth. The teeth are parallel to each other throughout the file.