214
AutoCAD and Its Applications—Advanced
Chamfering Solid Objects Chamfering Solid Objects
A chamfer is a small square edge on the edges of an object. The r
CHAMFER
command can be used to create a chamfer on a 2D or 3D object. Just as when cham-
fering a 2D line, there are two chamfer distances. Therefore, you must specify which
surfaces correspond to the first and second distances. The feature to which the chamfer fi
is applied must be constructed before chamfering. For example, if you are chamfering
a hole, the object (cylinder) must fi rst be subtracted to create the hole. If you are cham- fi
fering an intersection, the two objects must first be unioned. fi
After you enter the command, you must pick the edge you want to chamfer. The
edge is actually the intersection of two surfaces of the solid. One of the two surfaces
is highlighted when you select the edge. The highlighted surface is associated with
the fi rst chamfer distance. This surface is called the fi base surface. If the highlighted
surface is not the one you want as the base surface, enter
N
at the
[Next/OK]
prompt
and press [Enter]. This highlights the next surface. An edge is created by two surfaces.
Therefore, when you enter
N
for the next surface, AutoCAD cycles through only two
surfaces. When the proper base surface is highlighted, press [Enter].
The
CHAMFEREDGE
command works in a similar manner. Once the command
is entered, select an edge to chamfer. Then set the distance of the chamfer. When you
select an edge with a distance setting, a preview of the chamfer will appear. You can
continue to select edges or enter the
Loop
option. The
Loop
option is similar to the
Loop
option used with the
FILLETEDGE
command and allows you to select a loop
of edges. Once all edges are selected, press [Enter]. You are prompted to accept the
chamfer. If the current chamfer distances are acceptable, press [Enter]. If not, enter the
Distance
option and set new distance values. The advantages of using this command
are 1) a preview is shown and 2) a linear stretch grip is associated with the chamfer.
The linear stretch grip allows for subobject editing, which is discussed in Chapter 11.
Figure 8-20.
Using the
FILLETEDGE
command. A—The
Chain
option is used to select a chain of
continuous edges with rounded corners to fillet. B—The
Loop
option is used to select a loop
of edges to fillet.
Selected edge after
entering the
Chain
option
A
B
All edges
in the chain
are filleted
All edges
in the loop
are filleted
Selected edge
after entering
the
Loop
option
CHAMFER
Ribbon
Home
Modify
Chamfer
Type
CHAMFER
CHA
CHAMFEREDGE
Ribbon
Solid
Solid Editing
Chamfer Edge
Type
CHAMFEREDGE