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AutoCAD Tutorial

AutoCAD 3D Modeling: Editing Solids, Part 3

September 10, 2003

The SOLIDEDIT command offers different options to edit solid objects. The options cover face editing, edge editing and body editing. I have designed a series of tutorials to cover all these options. Every tutorial explains one or more options.

In this tutorial I show you how to use Offset Faces. You can reach this option through Solids Editing toolbar [Figure 1]. This option deals with faces of the solid model.

Figure 1


  • This tutorial is designed for AutoCAD 2004 though might be applicable to other releases.
  • In this tutorial user entries are in boldface.
  • The 8 symbol represents pressing Enter.

1. Download r16_offset_faces.dwg. The file consists of a solid with two holes [Figure 2].

Note: If you are using AutoCAD 2002 or an earlier release download r15_offset_faces.dwg.

Figure 2

2. Switch to 2D Wireframe shade mode [Figure 3].

Figure 3

3. Invoke Offset Faces (Modify menu > Solids Editing > Offset Faces).

4. Click the border of the hole on current XY plane. The front face of the solid and the inner face of the hole are selected at the same time.

5. While pressing Shift, click the border of the solid to deselect it. Now the only selected face is the inner face of the hole [Figure 4].

Figure 4

6. Press Enter.

7. Enter 1 as the offset distance. As you see the radius of the hole is decreased. When you enter positive offset distances the total volume of the solid increases. That's why the radius of the hole decreases [Figure 5].

Figure 5

8. Use the similar method to increase the radius of the back hole by 1 unit [Figure 6]:

Specify the offset distance: -1 8

Figure 6

About the Author

Alireza Parsai is the founder of cadpanel.com. He is a mechanical engineer with more than 12 years experience with AutoCAD. Alireza is an Autodesk Authorized Author, the AutoCAD consultant for Al Khawarizmi Institute, a contributing editor for Augiworld magazine, a writer for CAD Digest, and an instructor for AUGI Training Program. He has written 8 books in Farsi, 3 booklets in English, and more than 100 articles for different magazines and newsletters. You can reach Alireza at alireza.parsai@cadpanel.com or visit his website www.cadpanel.com .  

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