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P. 119
INSTRUMENT MAKING 87
ber; water syringes (Fig. 117): hot air syringes and chip
blowers (Fig. 118) for drying and removing debris from cavi-
ties and canals; rubber dam punches (Fig. 119) for punching
holes in the rubber cloth; as well as many other accessories
and appliances, will gradually become familiar articles to the
student, and will not be touched upon here (Figs. 120, 121
and 122).
INSTRUMENT MAKING
Object.—To gain a knowledge of the process of hardening,
tempering and annealing steel; of the proper methods of
shaping and sharpening tools; of the reason for placing the
various angles in the shanks; as well as gaining a familiarity
with the class, subclass, order and formula names of the
instruments.
Instrument blanks may be obtained from the various
dental instrument manufacturers—either in long-handle or
cone-socket forms. The blanks are annealed, but should be
re-annealed by the student before beginning the technic
exercises in instrument making. The amount of technic
work to be done will be regulated by the time at the disposal
of the class. Where time will not permit of the making of a
set of cutting instruments in steel, at least 6 or 8 long-handled
instruments should be constructed, the balance of the work
being done on annealed brass wire, 13-gauge, cut to 6-inch
lengths. The student should make a complete set of the
hand cutting instruments as used in the operative clinic
of the college.
—
Technic Work in Steel. Instruments required.
1. Blowpipe, foot bellows and tubing, or Bunsen
burner
2. Bench vise
3. Pliers (round-nose and flat-nose)
ber; water syringes (Fig. 117): hot air syringes and chip
blowers (Fig. 118) for drying and removing debris from cavi-
ties and canals; rubber dam punches (Fig. 119) for punching
holes in the rubber cloth; as well as many other accessories
and appliances, will gradually become familiar articles to the
student, and will not be touched upon here (Figs. 120, 121
and 122).
INSTRUMENT MAKING
Object.—To gain a knowledge of the process of hardening,
tempering and annealing steel; of the proper methods of
shaping and sharpening tools; of the reason for placing the
various angles in the shanks; as well as gaining a familiarity
with the class, subclass, order and formula names of the
instruments.
Instrument blanks may be obtained from the various
dental instrument manufacturers—either in long-handle or
cone-socket forms. The blanks are annealed, but should be
re-annealed by the student before beginning the technic
exercises in instrument making. The amount of technic
work to be done will be regulated by the time at the disposal
of the class. Where time will not permit of the making of a
set of cutting instruments in steel, at least 6 or 8 long-handled
instruments should be constructed, the balance of the work
being done on annealed brass wire, 13-gauge, cut to 6-inch
lengths. The student should make a complete set of the
hand cutting instruments as used in the operative clinic
of the college.
—
Technic Work in Steel. Instruments required.
1. Blowpipe, foot bellows and tubing, or Bunsen
burner
2. Bench vise
3. Pliers (round-nose and flat-nose)
