AutoCAD 3D Modeling: Boolean Operations
August 19, 2003
You can use the Boolean operations to create
complex solid models out of primitives. The following tutorial
shows you how to use Intersect, Subtract, and Union operations.
Intersect: Defines a new solid object based on the
common volume between selected solids.
Union: Defines a new solid that consists of common
and uncommon volume between selected solids.
Subtract: Select two set of solids. A single solid
based on the removal of the second set from the first one will
All the above operations will eliminate the original solids.
If you are using AutoCAD 2002 or an earlier release download
2. Open the drawing
3. Invoke INTERSECT
(Modify > Solids Editing > Intersect).
4. Select the
cylinders to create a new solid based on their intersection
5. Create a polar
array of the new solid based on the settings shown in figure 2.
Figure 2 -
Click on image to enlarge
6. Invoke UNION
(Modify > Solids Editing > Union). Select all the solids to
create the flower-shaped solid [Figure 3].
7. Switch on the
Cylinder layer. A yellow cylinder appears on screen [Figure 4].
8. Invoke SUBTRACT
(Modify > Solids Editing > Subtract).
9. Select the
flower as the first set of objects.
10. Press Enter.
11. Select the
cylinder as the second set.
12. Press Enter to
create the final solid [Figure 5].
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