PLTW INTRO TO ENGINEERING DESIGN
2026 PRACTICE GUIDE PROTOTYPING
MATERIALS AND MANUFACTURING
PROCESSES
◉ What feature would be used to create a 3D representation of a
baseball or softball bat that was created on a wood lathe?
Answer: A Revolve feature would be used, creating a 3D shape by
rotating a 2D profile around an axis.
◉ What do you need to know in order to perform a physical
property analysis?
Answer: You need to know the material composition, dimensions,
and any relevant environmental conditions (temperature, pressure,
etc.).
◉ Why is it important to perform a physical property analysis prior
to producing a part?
Answer: It helps ensure the part will meet performance
requirements, identify potential failure points, optimize material
selection, and reduce manufacturing costs and waste.
, ◉ Why is it important to understand the mathematics used in
physical property analysis?
Answer: Mathematical calculations are essential for determining
properties like volume, density, stress, strain, and thermal
expansion, which are critical for predicting a part's behavior and
ensuring its functionality.
◉ A work point is an independent entity whose location is defined in
___. Work points may be placed or projected onto ___, ___, or onto an
____ or ____. Work points can be constrained to the __ points of arcs,
circles, and ellipses.
Answer: A work point is an independent entity whose location is
defined in 3D space. Work points may be placed or projected onto
planes, surfaces, or onto an axis or point. Work points can be
constrained to the center points of arcs, circles, and ellipses.
◉ A work axis is a line that extends forever in ____ directions. Work
axes are useful for locating the ____ of a ___ or ___, are used in the
creation of ____ features, and may be ____ to in assembly models.
Answer: A work axis is a line that extends forever in two directions.
Work axes are useful for locating the center of a cylinder or cone, are
used in the creation of revolved features, and may be constrained to
in assembly models.
2026 PRACTICE GUIDE PROTOTYPING
MATERIALS AND MANUFACTURING
PROCESSES
◉ What feature would be used to create a 3D representation of a
baseball or softball bat that was created on a wood lathe?
Answer: A Revolve feature would be used, creating a 3D shape by
rotating a 2D profile around an axis.
◉ What do you need to know in order to perform a physical
property analysis?
Answer: You need to know the material composition, dimensions,
and any relevant environmental conditions (temperature, pressure,
etc.).
◉ Why is it important to perform a physical property analysis prior
to producing a part?
Answer: It helps ensure the part will meet performance
requirements, identify potential failure points, optimize material
selection, and reduce manufacturing costs and waste.
, ◉ Why is it important to understand the mathematics used in
physical property analysis?
Answer: Mathematical calculations are essential for determining
properties like volume, density, stress, strain, and thermal
expansion, which are critical for predicting a part's behavior and
ensuring its functionality.
◉ A work point is an independent entity whose location is defined in
___. Work points may be placed or projected onto ___, ___, or onto an
____ or ____. Work points can be constrained to the __ points of arcs,
circles, and ellipses.
Answer: A work point is an independent entity whose location is
defined in 3D space. Work points may be placed or projected onto
planes, surfaces, or onto an axis or point. Work points can be
constrained to the center points of arcs, circles, and ellipses.
◉ A work axis is a line that extends forever in ____ directions. Work
axes are useful for locating the ____ of a ___ or ___, are used in the
creation of ____ features, and may be ____ to in assembly models.
Answer: A work axis is a line that extends forever in two directions.
Work axes are useful for locating the center of a cylinder or cone, are
used in the creation of revolved features, and may be constrained to
in assembly models.
