2004
Table Of Contents
- Contents
- Chapter 1 - Find the Information You Need
- Part 1 - The User Interface
- Part 2 - Start, Organize, and Save a Drawing
- Part 3 - Control the Drawing Views
- Part 4 - Create and Modify Objects
- Chapter 14 - Control the Properties of Objects
- Chapter 15 - Use Precision Tools
- Chapter 16 - Draw Geometric Objects
- Chapter 17 - Change Existing Objects
- Part 5 - Hatches, Notes, and Dimensions
- Chapter 18 - Hatches, Fills, and Wipeouts
- Chapter 19 - Notes and Labels
- Chapter 20 - Dimensions and Tolerances
- Part 6 - Create Layouts and Plot Drawings
- Chapter 21 - Create Layouts
- Chapter 22 - Plot Drawings
- Part 7 - Share Data Between Drawings and Applications
- Chapter 23 - Reference Other Drawing Files (Xrefs)
- Chapter 24 - Link and Embed Data (OLE)
- Chapter 25 - Work with Data in Other Formats
- Chapter 26 - Access External Databases
- Overview of Using AutoCAD with External Databases
- Access a Database from Within AutoCAD
- Link Database Records to Graphical Objects
- Use Labels to Display Database Information in the Drawing
- Use Queries to Filter Database Information
- Share Link and Label Templates and Queries with Other Users
- Work with Links in Files from Earlier Releases
- Part 8 - Work with Other People and Organizations
- Chapter 27 - Protect and Sign Drawings
- Chapter 28 - Use the Internet to Share Drawings
- Chapter 29 - Insert and View Markups
- Chapter 30 - Publish Drawing Sets
- Part 9 - Create Realistic Images and Graphics
- Glossary
- Index
Modify 3D Solids | 433
Boundary sets are sets of faces defined by a closed boundary, which consists of
lines, circles, arcs, elliptical arcs, and spline curves. When defining a
boundary set on a solid object, you first select an internal point on the solid,
highlighting the face. If you select the same point on the face again,
AutoCAD highlights the adjoining face.
You can also select individual faces or edges with your pointing device or use
a crossing window, an irregular shaped polygon, or a fence that selects faces
or edges it passes through.
Extrude Faces on 3D Solids
You can extrude planar faces along a path, or you can specify a height value
and a tapered angle. Each face has a positive side, which is the side in the
direction of the face’s normal (the current face you’re working on). Entering
a positive value extrudes the face in its positive direction (usually outward);
a negative value extrudes in the negative direction (usually inward).
Tapering the selected face with a positive angle tapers the face inward, and a
negative angle tapers the face outward. The default angle, 0, extrudes the face
perpendicular to its plane. If you specify a large taper angle or a long extru-
sion height, you can cause the face to taper to a point before it reaches the
extrusion height; AutoCAD rejects the extrusion. Face extrusion along a path
is based on a path curve (lines, circles, arcs, ellipses, elliptical arcs, polylines,
or splines).
You can also extrude the face of a solid object along the path of a specified
line or curve. All profiles of the selected face extrude along the chosen path
to create the extrusion. You can select lines, circles, arcs, ellipses, elliptical
arcs, polylines, or splines as paths. The path should not lie on the same plane
as the selected face or have areas of high curvature.
To extrude a face on a solid object
1 From the Modify menu, choose Solids Editing ➤ Extrude Faces.
2 Select the face to extrude (1).
3 Select additional faces or press
ENTER to extrude.
4 Specify the height of extrusion.