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Exploring Drafting
You can also enter a magnifi cation scale factor
to reduce or enlarge the display relative to
the current display. A third option allows you
to zoom the view in real time by using the
pointing device to move the cursor upward (to
enlarge the view magnifi cation) or downward
(to reduce the view magnifi cation).
When you want to move the drawing across
the screen to view areas outside of the current
display without changing the magnifi cation,
you can use the Pan command. Panning adjusts
the view in real time. The drawing is panned
by using the pointing device to move the
cursor in the direction desired.
More advanced viewing commands are
available with 3D drawing programs. While
command names and navigation methods will
vary, 3D viewing commands typically allow
you to rotate a 3D model in three dimensions by
using the pointing device. The view is changed
in real time, allowing you to view different
features across the model dynamically.
with the Trim command, you can select as
many objects as needed to complete the extend
operation.
Using Display Commands
There are a variety of ways to display
drawing content on screen when working on
a CAD drawing. Display commands are used
to change the magnifi cation of the drawing,
change the viewpoint, and establish drawing
views, such as the views in a multiview
drawing. Multiview drawings are discussed
in Chapter 9.
When working on a CAD drawing, it is
often necessary to “zoom” into certain portions
to view features. The Zoom command provides
this capability. After entering the command, you
can zoom into a portion of the drawing by
windowing around the display. The windowed
portion is then shown at a greater magnifi cation.
A
B
1 _
2
2
1
_
2
2
3 _
2X R16
_
2
∅1
_
8
∅7
_
2
1 _
2
3
_
8
5
_
8
∅1
2
9
–16NC–2
3
_
32
X 45°
Fillets
6
Chamfered
edges
2X
Goodheart-Willcox Publisher
Figure 7-21. Creating rounded and angled features. A—Fillets are created by specifying a fillet radius and selecting
the two objects forming the intersection. B—Chamfers are created by specifying the chamfer distances and
selecting two lines.
Copyright Goodheart-Willcox Co., Inc.