2004

402 | Chapter 17 Change Existing Objects
Fillet in 3D
You can fillet coplanar objects with extrusion directions not parallel to the Z
axis of the current UCS. AutoCAD determines the extrusion direction for the
fillet arc in 3D space as follows.
For objects on the same plane with the same extrusion direction normal to
that plane, the fillet arc is on that plane and has the same extrusion
direction.
If the objects are on the same plane but have opposite or different extrusion
directions, the fillet arc is placed on that object plane with an extrusion direc-
tion normal to the object plane and inclined towards the positive Z direction
of the current UCS. For example, suppose two arcs, A and B, are on the same
plane in 3D space but have opposite extrusion directions (0,0.5,0.8) and
(0,–0.5,–0.8) relative to the current UCS. The fillet arc adopts the extrusion
direction (0,0.5,0.8).
To set the fillet radius
1 From the Modify menu, choose Fillet.
2 Enter r (Radius).
3 Enter the fillet radius
4 Select the objects to fillet.
Modify toolbar
Command line
FILLET
To fillet two line segments
1 From the Modify menu, choose Fillet.
2 Select the first line.
3 Select the second line.
Modify toolbar
Command line
FILLET
To fillet without trimming
1 From the Modify menu, choose Fillet.
2 If necessary, enter t (Trim) and then enter n (No Trim).