2011

Table Of Contents
arcs. The UCS also determines the plane of operation for trimming and
extending, offsetting, and rotating objects.
Use object snaps and grid snap carefully to ensure the precision of your
model.
Use coordinate filters to drop perpendiculars and easily locate points in
3D based on the location of points on other objects.
Quick Reference
Commands
UCS
Manages user coordinate systems.
XEDGES
Creates wireframe geometry from the edges of a 3D solid, surface, mesh,
region, or subobject.
System Variables
ELEVATION
Stores the current elevation of new objects relative to the current UCS.
FACETRES
Adjusts the smoothness of shaded and rendered objects and objects with
hidden lines removed.
ISOLINES
Specifies the number of contour lines per surface on objects.
Add 3D Thickness to Objects
Use the thickness property to give objects a 3D appearance.
The 3D thickness of an object is the distance that object is extended, or
thickened, above or below its location in space. Positive thickness extrudes
upward in the positive Z direction; negative thickness extrudes downward
(negative Z). Zero (0) thickness means that there is no 3D thickening of the
object.
544 | Chapter 22 Create 3D Models