Book Image

Autodesk AutoCAD 2013 Practical 3D Drafting and Design

Book Image

Autodesk AutoCAD 2013 Practical 3D Drafting and Design


Overview of this book

AutoCAD is a computer-aided design (CAD) and drafting software application. AutoCAD supports both 2D and 3D formats. AutoCAD is used in a range of industries and is utilized by architects, project managers, and engineers, among others."Autodesk AutoCAD 2013 Practical 3D Drafting and Design" will take you beyond the 2D frontier and help you create accurate 3D models that simulate reality. This book is crammed full of creative and practical tutorials which will help you master the third dimension. From exercises on coordinate systems to creating solids and surfaces from 2D, you will wonder how you ever designed without this resource by your side."Autodesk AutoCAD 2013 Practical 3D Drafting and Design" is full of hands-on studies and projects that will help develop your 3D skills. Starting from the assumption of only a very basic knowledge of AutoCAD, this book will help you master 3D visualization and coordinate systems, create 3D models from 2D drawings, and from basic shapes, measure volumes, and other information, obtain 2D construction drawings from 3D models as well as how to apply lights and materials to get photorealistic images.
Table of Contents (20 chapters)
Autodesk AutoCAD 2013 Practical 3D Drafting and Design
About the Author
About the Reviewers

Creating solids and surfaces by extrusion

Often we create a 3D model from 2D drawings by extruding (giving height) to planar entities or closed areas. For instance, in architecture, we may construct walls from plan views. The following sections present the commands for extrusion.

Extruding 2D objects

Probably the most used command for modeling in 3D is EXTRUDE, which is presented next.

The EXTRUDE command

The EXTRUDE command (alias EXT) allows for extruding or giving height to planar entities, thus creating volumes. The command starts by showing information about the wire frame density and the MOde default option; it then asks for the objects to be extruded:

Command: EXTRUDE
Current wire frame density:  ISOLINES=4, Closed profiles creation mode = Solid
Select objects to extrude or [MOde]: Selection

By default, the command prompts the height of extrusion:

Specify height of extrusion or [Direction/Path/Taper angle/Expression]: Value

All the selected objects are extruded. If the original object is...