2012

When you move the pointer completely over an edge as shown in the middle
illustration, the cursor changes to show the direction of the dynamic UCS
axes. You can then create objects on the angled face easily as shown in the
illustration on the right.
NOTE To display the XYZ labels on the cursor, right-click the DUCS button and
click Display Crosshair Labels.
The X axis of the dynamic UCS is located along an edge of the face and the
positive direction of the X axis always points toward the right half of the
screen. Only the front faces of a solid are detected by the dynamic UCS.
The types of commands that can use a dynamic UCS include the following:
■ Simple geometry. Line, polyline, rectangle, arc, circle
■ Text. Text, Multiline text, table
■ References. Insert, xref
■ Solids. Primitives and POLYSOLID
■ Editing. Rotate, mirror, align
■ Other. UCS, area, grip tool manipulation
TIP You can easily align the UCS with a plane on a solid model by turning on the
dynamic UCS feature and then using the UCS command to locate the origin on
that plane.
If Grid and Snap mode are turned on, they align temporarily to the dynamic
UCS. The limits of the grid display are set automatically.
You can temporarily turn off the dynamic UCS by pressing F6 or Shift+Z while
moving the pointer over a face.
NOTE The dynamic UCS is available only while a command is active.
To change the UCS dynamically
1 Start a command supported by dynamic UCS.
2 If necessary, click DUCS on the status bar to turn it on.
3 Move your pointer over the edge of a face on a solid model.
4 Complete the command.
602 | Chapter 17 Use Precision Tools