AutoCAD 3D Modeling: Slice and Interfere
August 22, 2003
There are two useful commands that can help
you in creating complex solid models. SLICE cuts the solid with
a spatial plane. The INTERFERE command is capable to calculate
the common volume of two solids and create a solid model based
on the calculated volume.
- This tutorial is designed for AutoCAD 2004 though might be
applicable to other releases.
- In this tutorial user entries are in boldface.
symbol represents pressing Enter.
If you are using AutoCAD 2002 or an earlier release download
2. Open the drawing
in AutoCAD. The drawing consists of a composite solid and a
cylinder [Figure 1].
3. Invoke INTERFERE
(Draw menu > Solids > Interference).
4. When you are
prompted for the first set of solids, select both solid models.
5. When you are
prompted for the second set of solids press Enter.
6. Keep the new
interference solids? [Yes/No] <N>: y
7. Alter the shade
mode to Gouraud shaded.
8. Freeze solid1
and solid2 layers to view the new solid object [Figure 2].
9. Thaw the frozen
10. Invoke UNION
(Draw menu > Solids > Union).
11. Select the
first two solids (outer solids) and then press Enter
12. Invoke SLICE
(Draw menu > Solids > Slice).
13. Cut the last
solid with ZX plane:
Select objects: 1 found
Specify first point on slicing plane by [Object/Zaxis/View/XY/YZ/ZX/3points]
Specify a point on the ZX-plane <0,0,0>:
14. Keep the
portion of model that is located on the positive side of the Y
axis [Figure 3]:
Specify a point on desired side of the plane or [keep Both
15. Subtract the
small solid from the big one [Figure 4].
For more information on Subtract and other Boolean operations
read the following tutorial:
AutoCAD 3D Modeling: Boolean Operations
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, an instructor
for AUGI Training Program, and an elected speaker for Autodesk
University 2002. He has written 7 books in Farsi, 3 booklets in
English, and more than 100 articles for different magazines and
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