Offset Surface
Click Offset Surface
on the
Surfaces toolbar, or click Insert, Surface,
Offset.
In the
PropertyManager:
Select
surfaces or faces in the graphics area for Surface
or Faces to Offset
.
Set
a value for Offset Distance.
You can create an
offset surface with a distance of zero.

If
necessary, select Flip Offset Direction
to change the direction of the offset.
Click OK
.