TOOLINGU: BENCHWORK AND LAYOUT
OPERATIONS 241 CORRECT 100%
Which hand reamers can change in size to fit a smaller or larger hole? - ANSWER
Adjustable hand reamers
What does the pitch diameter of a hand tap determine? - ANSWER Size and fit of the
tapped thread.
What is the first step a machinist must complete before tapping a hole? - ANSWER
Center drill the hole.
What type of hand tap should a machinist use whenever possible because it is the least
likely to break? - ANSWER Taper tap
How does layout help prevent operator errors? Layout: - ANSWER Provides a visual
representation of workpiece features.
When should a machinist use a T-handle tap wrench during hand tapping operations?
T-handle tap wrenches should be used for taps that: - ANSWER Have smaller
diameters and break easily.
What are benchwork operations? Benchwork operations: - ANSWER Are any operation
performed on a workpiece before or after manual machining.
What should a machinist do after forming each thread during hand tapping? - ANSWER
Reverse the tap a half turn to break chips.
What tools would a machinist use to mark the location of a hole center on a workiece
surface? - ANSWER Center punch and ball peen hammer
Which of the following statements about filing is true? - ANSWER A file is only sharp
when pressure is applied in a forward direction
What part of a layout process is a machinist likely performing when using layout dye, a
precision square, and a scriber? A machinist is likely marking: - ANSWER Straight lines.
What benchwork operation can a machinist perform in order to fit a bushing? -
ANSWER Hand reaming
What benchwork operation can a machinist perform with a pneumatic, or air-powered,
tool? - ANSWER Engraving
OPERATIONS 241 CORRECT 100%
Which hand reamers can change in size to fit a smaller or larger hole? - ANSWER
Adjustable hand reamers
What does the pitch diameter of a hand tap determine? - ANSWER Size and fit of the
tapped thread.
What is the first step a machinist must complete before tapping a hole? - ANSWER
Center drill the hole.
What type of hand tap should a machinist use whenever possible because it is the least
likely to break? - ANSWER Taper tap
How does layout help prevent operator errors? Layout: - ANSWER Provides a visual
representation of workpiece features.
When should a machinist use a T-handle tap wrench during hand tapping operations?
T-handle tap wrenches should be used for taps that: - ANSWER Have smaller
diameters and break easily.
What are benchwork operations? Benchwork operations: - ANSWER Are any operation
performed on a workpiece before or after manual machining.
What should a machinist do after forming each thread during hand tapping? - ANSWER
Reverse the tap a half turn to break chips.
What tools would a machinist use to mark the location of a hole center on a workiece
surface? - ANSWER Center punch and ball peen hammer
Which of the following statements about filing is true? - ANSWER A file is only sharp
when pressure is applied in a forward direction
What part of a layout process is a machinist likely performing when using layout dye, a
precision square, and a scriber? A machinist is likely marking: - ANSWER Straight lines.
What benchwork operation can a machinist perform in order to fit a bushing? -
ANSWER Hand reaming
What benchwork operation can a machinist perform with a pneumatic, or air-powered,
tool? - ANSWER Engraving
