Table of Contents

Discovering Autocad 2020, First Edition

PART ONE:  BASIC TWO-DIMENSIONAL ENTITIES

Chapter 1 Lines and Essential Tools     1

Introduction     1

Creating a New Drawing     2

Exploring the Drawing Window     5

Interacting with the Drawing Window     7

Exploring Command Entry Methods     13

Drawing, Undoing, and Erasing Lines     19

Saving and Opening Your Drawings     30

Getting Started     32

Chapter Summary     36

Chapter Test Questions     36

Chapter Drawing Projects     38

Chapter 2 Circles and Drawing Aids     51

Introduction     51

Changing the Grid Setting     52

Changing the Snap Setting     53

Changing Units     55

Drawing Circles by Specifying a Center Point and a Radius     58

Drawing Circles by Specifying a Center Point and a Diameter     60

Accessing AutoCAD Online Help Features     63

Using the ERASE Command     65

Using Single-Point Object Snap     72

Using the RECTANG Command     74

Customizing Your Workspace     76

Plotting or Printing a Drawing     78

Chapter Summary     82

Chapter Test Questions     82

Chapter Drawing Projects     84

Chapter 3  Layers, Colors, and Linetypes     97

Introduction     97

Creating New Layers     98

Assigning Colors to Layers     100

Assigning Linetypes     102

Assigning Lineweights     103

Changing the Current Layer     105

Changing Linetype Scale     107

Editing Corners Using FILLET     108

Editing Corners Using CHAMFER     110

Zooming and Panning with the Scroll Wheel     111

Using the ZOOM Command     113

Entering Single-Line Text     115

Chapter Summary     117

Chapter Test Questions     117

Chapter Drawing Projects     120

Chapter 4  Templates, Copies, and Arrays     133

Introduction     133

Setting Limits     134

Creating a Template     137

Saving a Template Drawing     138

Using the MOVE Command     140

Using the COPY Command     144

Using the ARRAY Command–Rectangular Arrays     147

Creating Center Marks     153

Changing Plot Settings     154

Chapter Summary     158

Chapter Test Questions     158

Chapter Drawing Projects     162

Chapter 5  Arcs and Polar Arrays     177

Introduction     177

Creating Polar Arrays     177

Drawing Arcs     181

Using the ROTATE Command     185

Using Polar Tracking at Any Angle     188

Creating Mirror Images of Objects on the Screen     189

Creating Page Setups     192

Chapter Summary     197

Chapter Test Questions     197

Chapter Drawing Projects     200

Chapter 6  Object Snap     213

Introduction     213

Selecting Points with Object Snap (Single-Point Override)     214

Selecting Points with Running Object Snap     215

Object Snap Tracking     219

Using the OFFSET Command (Creating Parallel Objects with OFFSET)     223

Shortening Objects with the TRIM Command     224

Extending Objects with the EXTEND Command     226

Using STRETCH to Alter Objects Connected to Other Objects     228

Creating Plot Layouts     232

Chapter Summary     242

Chapter Test Questions     242

Chapter Drawing Projects     244

PART TWO:  TEXT, DIMENSIONS, AND OTHER COMPLEX ENTITIES

Chapter 7  Text 259

Introduction     259

Entering Single-Line Text with Justification Options     259

Entering Text on an Angle and Text

Using Character Codes     264

Entering Multiline Text Using MTEXT     265

Editing Text in Place with TEXTEDIT     268

Modifying Text with the Quick Properties Palette     270

Using the SPELL Command     273

Changing Fonts and Styles     274

Changing Properties with MATCHPROP     278

Scaling Previously Drawn Entities     280

Creating Tables and Fields     283

Using AutoCAD Templates, Borders, and Title Blocks     289

Chapter Summary     292

Chapter Test Questions     292

Chapter Drawing Projects     294

Chapter 8  Dimensions     307

Introduction     307

Creating and Saving a Dimension Style     307

Drawing Linear Dimensions     312

Drawing Multiple Linear Dimensions Using QDIM     316

Drawing Ordinate Dimensions     319

Drawing Angular Dimensions     324

Dimensioning Arcs and Circles     326

Dimensioning with Multileaders     328

Changing Dimension Text     335

Using Associative Dimensions     337

Using the HATCH Command     340

Scaling Dimensions Between Paper Space and Model Space     344

Chapter Summary     353

Chapter Test Questions     353

Chapter Drawing Projects     356

Chapter 9  Polylines   373

Introduction     373

Drawing Polygons     374

Drawing Donuts     376

Using the FILL Command     377

Drawing Straight Polyline Segments     378

Drawing Polyline Arc Segments     381

Editing Polylines with PEDIT     382

Drawing Splines     384

Creating Path Arrays     387

Drawing Revision Clouds     388

Drawing Points     390

Using Constraint Parameters     392

Using AutoConstrain and Inferred Constraints     398

Chapter Summary     401

Chapter Test Questions     401

Chapter Drawing Projects     404

Chapter 10  Blocks, Attributes, and External References     419

Introduction     419

Creating Groups     420

Creating Blocks     422

Inserting Blocks into the Current Drawing     425

Creating Dynamic Blocks     428

Adding Constraints to Dynamic Blocks     436

Accessing Data in a Block Table     439

Using the Windows Clipboard     443

Inserting Blocks and External References into Other Drawings     445

Using the AutoCAD DesignCenter     449

Defining Attributes     455

Working with External References     461

Extracting Data from Attributes     463

Creating Tool Palettes     467

Exploding Blocks     468

Chapter Summary     470

Chapter Test Questions     470

Chapter Drawing Projects     474

PART THREE:  ISOMETRIC DRAWING AND THREE-DIMENSIONAL MODELING

Chapter 11  Isometric Drawing     485

Introduction     485

Using Isometric Snap     485

Switching Isometric Planes     487

Using COPY and Other Edit Commands     488

Drawing Isometric Circles with ELLIPSE     490

Drawing Text Aligned with Isometric Planes     492

Drawing Ellipses in Orthographic Views     494

Saving and Restoring Displays with VIEW     497

Chapter Summary     501

Chapter Test Questions     501

Chapter Drawing Projects     504

Chapter 12  3D Modeling     519

Introduction     519

Creating and Viewing a 3D Wireframe Box     520

Defining User Coordinate Systems     525

Exploring the 3D Basics Workspace     530

Creating Solid Boxes and Wedges     532

Accessing Different Visual Styles     535

Creating the Union of Two Solids     536

Working with DUCS     537

Creating Composite Solids with SUBTRACT     539

Creating Chamfers and Fillets on Solid Objects     543

Practicing 3D Gizmo Editing     546

Rendering Solid Models     548

Changing Viewpoints with the ViewCube     562

Creating Layouts with Multiple Views     564

Chapter Summary     568

Chapter Test Questions     568

Chapter Drawing Projects     572

Chapter 13  More Modeling Techniques and Commands     581

Introduction     581

Drawing Polysolids     581

Drawing Cones     586

Drawing Pyramids     588

Drawing Torus     589

Slicing and Sectioning Solids     590

Mesh Modeling     595

Adjusting Viewpoints with 3DORBIT     605

Creating 3D Solids from 2D Outlines     612

Walking Through a 3D Landscape     618

Creating an Animated Walk-Through     621

Chapter Summary     625

Chapter Test Questions     625

Chapter Drawing Projects     628

Appendix A  Drawing Projects     645

Appendix B  Creating Customized Panels     667

Appendix C  Menus, Macros, and the CUI Dialog Box     677

Index     681

Appendix D (Online only)  Additional Tools for Collaboration

Glossary (Online only)