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AutoCAD Tutorial

AutoCAD 3D Modeling: Align

September 3, 2003

The ALIGN command enables you to do 3D rotation, displacement, and scale at the same time. With this command you can align a model with another one. The following tutorial shows you how.

Note: This tutorial is designed for AutoCAD 2004 though might be applicable to other releases.

1. Download r16_align.dwg.

Note: If you are using AutoCAD 2002 or an earlier release download r15_align.dwg.

2. Open the drawing in AutoCAD [Figure 1]. The drawing consists of two solid objects.

Figure 1 - Click on image to enlarge

3. Switch to Wireframe shade mode [Figure 2]. I have added some numbers to help you throughout this tutorial.

Figure 2 - Click on image to enlarge

4. Let's align the solid to the right with the other one.

5. Make sure that Endpoint OSnap is enabled.

6. Invoke ALIGN (Modify menu > 3D Operation > Align).

7. Select the model to the right. Press Enter.

8. For the first source point click point 1.

9. For the first target point click point 1' [Figure 3]. A line connects 1 to 1'. The 1-1' line defines the displacement vector.

Figure 3

10. For the second source point click 2.

11. For the second target point click 2'. A line connects 2 to 2'. After the operation 1-2 line will be parallel to 1'-2'.

Figure 4

12. For the last set of points click 3 and 3' respectively. The plane 1-2-3 fits 1'-2'-3' and the object is aligned with the other one [Figure 5].

Figure 5

13. Union the models [Figure 6].

Figure 6

Note: For more information on UNION read the following tutorial:
► AutoCAD 3D Modeling: Boolean Operations

14. Switch to Gouraud shade mode.

15. Alter the view to NW Isometric [Figure 7].

Figure 7

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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