Introducing 3D modeling - Introduction to AutoCAD 2011: 2D and 3D Design - page 241

Specify corner or [Cube/Length]: 280,160,10
Specify height or [2Point]: 70
Command:

6. Place the screen in 3D Navigate/SW Isometric and Zoom to 1 .
7. Call the Union tool from the Home/Edit panel and in response to the
prompts in the tool's sequences pick each of the 4 objects in turn to
form a union of the 4 objects.
8. Place in Visual Styles/Conceptual .

Fig. 12.27 Fourth
example - Box and
Wedge

The result is shown in Fig. 12.27 .

Fifth example - Cylinder and Torus ( Fig. 12.28 )

1. Make layer Red current.
2. Set Isolines to 24 .
3. Using the Cylinder tool from the Home/Create panel, construct a
cylinder of centre 180,160 , of radius 40 and height 120 .
4. Click the Torus tool icon in the Home/Create panel. The command
line shows:

Command: _torus
Specify center point or [3P/2P/Ttr]:
180,160,10
Specify radius or [Diameter]: 40
Specify tube radius or [2Point/Diameter]: 10
Command: right-click
TORUS
Specify center point or [3P/2P/Ttr]:
180,160,110
Specify radius or [Diameter] <40>: right-click
Specify tube radius or [2Point/Diameter] <10>:
right-click
Command:

5. Call the Cylinder tool again and construct another cylinder of centre
180, 160 , of radius 35 and height 120 .
6. Place in the 3D Navigate/SW Isometric view and Zoom to 1 .
7. Click the Union tool icon in the Home/Edit panel and form a union of
the larger cylinder and the two torii.
8. Click the Subtract tool icon in the Home/Edit panel and subtract the
smaller cylinder from the union.
9. Place in Visual Styles/X-Ray .

Fig. 12.28 Fifth
example - Cylinder
and Torus

The result is shown in Fig. 12.28 .