200
AutoCAD and Its Applications—Advanced
Copyright Goodheart-Willcox Co., Inc.
When prompted to select the side to keep, you can press
[Enter]
to keep both sides.
If both sides are retained, two separate 3D solids are created. Each solid can then be
used for additional modeling purposes.
There are several additional options for specifying a slicing path. These options
are listed here and described in the following sections.
•
Planar object
•
Surface
•
Zaxis
•
View
•
XY
•
YZ
•
ZX
•
3points
NOTE NOTE
Once the
SLICE
command has been used, the history of the solid to that point is
removed. If a history of the work is important, then save a copy of the fi le or place a
copy of the object on a frozen layer prior to performing the slice.
Planar Object
A second method to create a slice through a 3D solid is to use an existing planar
object. Planar objects include circles, arcs, ellipses, 2D polylines, and 2D splines. See
Figure 8-24A. The plane on which the planar object lies must intersect the object to be
sliced. The current UCS has no effect on this option.
Be sure that the planar object has been moved to the location of the slice. Then,
select the
SLICE
command, pick the object to slice, and press [Enter]. Next, enter the
Planar Object
option and select the slicing path object (the circle, in this case). Finally,
specify which side is to be retained. See Figure 8-24B. Again, if both sides are kept,
they are separate objects and can be individually manipulated.
Surface
A surface object can be used as the slicing path. The surface can be planar or
nonplanar (curved). Surface modeling is discussed in detail in Chapter 10. Using a
surface as a slicing path is a technique that you can use to quickly create a mating die.
For example, refer to Figure 8-25. First, draw the required surface. The surface should
exactly match the stamped part that will be manufactured, Figure 8-25A. Then, draw
a box that encompasses the surface. Next, select the
SLICE
command, pick the box,
and press [Enter]. Then, enter the
Surface
option and select the surface. You may need
to turn on selection cycling or work in a wireframe display. Finally, when prompted
to select the side to keep, press
[Enter]
to keep both sides. The two halves of the die can
now be moved and rotated as needed, Figure 8-25B.
PROFESSIONAL TIP PROFESSIONAL TIP
You can use extruded surfaces, revolved surfaces, lofted surfaces, and swept surfaces
as slicing objects.