2012

Table Of Contents
Control the User Coordinate System (UCS)
Customize the UCS origin and orientation using the UCS origin and axes
grips, the UCS icon shortcut menu, or the UCS command.
You can align the UCS icon with existing objects, including 3D faces or edges.
To align the UCS with an existing 3D object
1 Click the UCS icon, and then click Move and Align.
2 Drag the UCS icon over the portion of the object with which you want
to align it.
3 Click to place the new UCS.
To define a new UCS origin using the origin grip
1 Click the UCS icon.
2 Click and drag the square origin grip to its new location.
The UCS origin (0,0,0) is redefined at the point you specify.
TIP To place the origin with precision, use object snaps or grid snaps, or
enter a specific X,Y,Z coordinate.
To specify a new UCS with three points
1 Right-click the UCS icon, and click 3 Point.
2 Specify a new origin point.
3 Specify a point on the positive X axis of the new UCS.
4 Specify a point on the positive portion of the XY plane of the new UCS.
To rotate the UCS about the X, Y, or Z axis
Right-click the UCS icon, and click Rotate Axis. Click X, Y, or Z.
As you drag the cursor, the UCS rotates in the positive direction around
the specified axis (see Apply the Right-Hand Rule). You can also specify a
rotation angle.
TIP Hover over the grips at the ends of the X, Y, and Z axes to access the rotate
options.
458 | Chapter 16 Use Precision Tools