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Chapter Overview ■ 43
Chapter
2
Creating Basic Drawings
Every drawing begins with the creation of basic geometry, objects such as lines, circles, arcs, and
rectangles. These objects serve as building blocks for complex drawings and, as a result, you must
master the use of the commands that create these objects.
Mastering these commands involves more than just knowing where the command is and how it works.
You must also develop an understanding of the underlying coordinate system, and the settings such as
object snaps, object snap tracking, and other features that are designed to assist you in creating basic
objects.
There is generally more than one way to accomplish a task in the software. After you learn about the
commands and features available, you can determine the methods that work best for you.
This chapter, and all subsequent chapters of the book, assume that you will be using the 2D Drafting &
Annotations workspace with the toolbar ribbon at the top of the AutoCAD® window. If you are using
AutoCAD LT®, while you might see slight interface differences, every attempt has been made to retain
the fidelity of the learning experience when using this book.
Objectives
After completing this chapter, you will be able to:
■ Identify the default coordinate system and use dynamic input, direct distance, and shortcut menus.
■ Use the Line, Circle, Arc, Erase, Rectangle, and Polygon commands to create and erase geometry in
the drawing.
■ Use object snaps to accurately place and create objects in the drawing.
■ Activate and use the Polar Tracking and PolarSnap modes to more accurately create geometry at
different angles in the drawing.
■ Explain, enable, and use object snap tracking to position geometry in the drawing.
■ Use the Unit command to set up the drawing environment.
■ Use the concepts and tools that you learned in Chapter 2 to begin a small architectural floor plan.
■ Use the concepts and tools that you learned in Chapter 2 to create the initial geometry for a small
mechanical assembly drawing.
- Learning A utoCAD 1
- 2010, Volume 1 1
- Trademarks 2
- Disclaimer 2
- Contents 3
- Contents 4
- ■ v 5
- Acknowledgements 7
- Acknowledgements 8
- Introduction 9
- Prerequisites 10
- Using This Guide 10
- Completing the Exercises 11
- Settings for the Exercises 12
- Notes, Tips, and Warnings 13
- Introduction 14
- Taking the AutoCAD Tour 15
- Setting the Workspace 17
- ■ 5 19
- Keyboard Input 21
- User Interface Layout 22
- ■ 9 23
- Add or Remove Tabs 24
- ■ 11 25
- Panel Visibility 26
- Panel Tools Visibility 26
- ■ 13 27
- About Shortcut Menus 28
- ■ 15 29
- ■ User's Guide 31
- ■ Command Reference 31
- ■ New Features Workshop 31
- Communication Center Options 32
- Command Window 33
- Command Sequence 34
- ■ 21 35
- Lesson: Working with Files 36
- Open File Dialog Box 37
- Select Template Dialog Box 38
- Save Drawing As Dialog Box 39
- Lesson: Displaying Objects 40
- Display Tools 41
- Zoom Realtime 44
- ■ 31 45
- Zoom Command Options 46
- ■ 33 47
- Wheel Mouse Features 48
- ■ 37 51
- Exercise: Hands-On Tour 52
- ■ 39 53
- Creating Basic Drawings 57
- Lesson: Inputting Data 59
- About the Command Line 60
- About the Coordinate System 61
- Entering Coordinates 63
- About Dynamic Input 64
- ■ 51 65
- Dynamic Input Options 66
- ■ 55 69
- ■ 57 71
- Using Direct Distance Entry 72
- ■ 59 73
- ■ 61 75
- Exercise: Input Data 76
- ■ 63 77
- Line Command 80
- Line Command Guidelines 81
- Circle Command 83
- Circle Command Options 84
- Circle Command Guidelines 85
- Arc Command 87
- ■ 75 89
- Erase Command 90
- ■ 77 91
- ■ Enter OOPS and press ENTER 92
- Undo and Redo Commands 93
- Undo and Redo Guidelines 95
- ■ 83 97
- Rectangle Command 98
- Rectangle Command Guidelines 99
- Polygon Command 101
- Command Options 102
- Polygon Command Guidelines 102
- ■ 89 103
- Completing the Exercise 105
- ■ 93 107
- ■ Enter 50. Press ENTER 108
- ■ 95 109
- ■ 97 111
- Lesson: Using Object Snaps 112
- About Object Snap 113
- Object Snaps 114
- Object Snap Settings 115
- Object Snap Override 117
- Object Snap Modes 118
- ■ 105 119
- ■ 107 121
- Using Object Snap 122
- ■ 109 123
- ■ 111 125
- ■ 113 127
- Exercise: Use Object Snaps 128
- ■ 115 129
- Objectives 131
- Command Access 132
- ■ 119 133
- ■ 121 135
- Grid and Snap 137
- Ortho Mode 138
- ■ 127 141
- About Object Snap Tracking 143
- Using Object Snap Tracking 144
- ■ 133 147
- ■ 135 149
- ■ 137 151
- Lesson: Working with Units 153
- About Units 154
- Setting Units 155
- Drawing Units Dialog Box 156
- Guidelines for Setting Units 157
- ■ 147 161
- ■ 149 163
- Metric Units 165
- Imperial Units 166
- ■ 153 167
- ■ 155 169
- Chapter Summary 170
- Manipulating Objects 171
- Implied Window Selection 173
- Implied Crossing Selection 174
- Object Selection with Grips 175
- Using Hover Grips 176
- Using Selected Grips 176
- Display Grip Editing Options 176
- Guidelines for Grip Editing 177
- Select Objects Options 178
- ■ 165 179
- ■ 167 181
- Selecting with a Fence 182
- ■ 169 183
- Selecting with the All Option 184
- ■ 171 185
- Exercise: Select Objects 187
- ■ 175 189
- Moving Objects 191
- Guidelines 193
- ■ 181 195
- Exercise: Move Objects 196
- ■ 183 197
- ■ 185 199
- ■ 187 201
- Lesson: Objects 202
- Copying Objects 203
- ■ 193 207
- Exercise: Copy Objects 208
- ■ 195 209
- Lesson: Position 210
- Rotating Objects 211
- Procedure: Rotating Objects 212
- ■ 201 215
- Exercise: Rotate Objects 216
- ■ 203 217
- Mirroring Objects 220
- Procedure: Mirroring Objects 221
- Procedure: Mirroring Text 222
- ■ 209 223
- ■ 211 225
- ■ 213 227
- Creating an Array of Objects 229
- Array Dialog Box: Polar Array 231
- ■ 219 233
- ■ 221 235
- (Metric Units) 237
- (Imperial Units) 239
- ■ 227 241
- Scaling Objects 243
- Procedure: Scaling Objects 244
- ■ 231 245
- ■ 233 247
- ■ 235 249
- Challenge Exercise: Grips 250
- ■ 237 251
- ■ 239 253
- ■ 241 255
- ■ 247 261
- ■ 249 263
- Commands 267
- Lesson: Using Layers 269
- A Typical Layer Configuration 271
- Default Layer 272
- Layer Tools 273
- Layers Panel 274
- ■ 261 275
- Layer Status 277
- ■ 265 279
- Layer Tools Key Points 280
- ■ 267 281
- Exercise: Work with Layers 282
- ■ 269 283
- ■ 271 285
- About Object Properties 288
- Object Properties - Line 289
- ByLayer Property 291
- ByLayer 292
- Changing Object Properties 293
- ■ 281 295
- ■ 283 297
- Change Properties Guidelines 299
- ■ 287 301
- ■ 289 303
- Lesson: Quick Properties 305
- About Quick Properties 306
- Quick Properties Settings 307
- Location Modes 307
- Using Quick Properties 308
- Property Settings Dialog Box 313
- ■ 301 315
- ■ 303 317
- ■ 305 319
- Using the Properties Palette 321
- ■ 309 323
- ■ 311 325
- Lesson: Using Linetypes 327
- About Linetypes 328
- Linetype Key Points 329
- About the Linetype Manager 331
- Loading Linetypes 332
- Controlling Linetype Scale 332
- Properties Palette 333
- ■ 321 335
- ■ 323 337
- Exercise: Use Linetypes 338
- ■ 325 339
- ■ 327 341
- ■ 329 343
- ■ 331 345
- About Measuring 347
- Using Measure Tools 348
- Measure Command Options 350
- Process: Measuring Distance 351
- Process: Measuring Radius 352
- Procedure: Measuring an Angle 353
- Process: Measuring Area 354
- ■ 343 357
- Obtaining Object Information 358
- ■ 345 359
- Answers to Exercise Questions 363
- Exercise: Measure Objects 364
- ■ 351 365
- ■ 353 367
- ■ 357 371
- Altering Objects 373
- Lesson: Defined Boundaries 374
- ■ 361 375
- Procedure: Trimming Objects 377
- Procedure: Extending Objects 378
- ■ 365 379
- Extended Edge Mode 380
- ■ 367 381
- ■ 369 383
- ■ 371 385
- ■ Start the Erase command 386
- Offsetting Objects 388
- ■ 377 391
- ■ 379 393
- ■ 383 397
- Lesson: Joining Objects 399
- Joining Objects 400
- Join Command Example 401
- ■ 389 403
- Exercise: Join Objects 405
- ■ Zoom in to the table 406
- ■ Start the Join command 406
- Breaking Objects 408
- ■ 397 411
- ■ 399 413
- Exercise: Break Objects 415
- ■ 403 417
- Creating Fillets 419
- Key Points 422
- ■ 409 423
- ■ 411 425
- Lesson: Two Objects 427
- Creating Chamfers 428
- Using Chamfer Options 429
- Procedure: Creating Chamfers 430
- Chamfer Guidelines 430
- ■ 417 431
- ■ 421 435
- Stretching Objects 437
- Procedure: Stretching Objects 438
- Stretch Guidelines 439
- ■ 427 441
- ■ Click a corner endpoint 442
- Exercise: Stretch Objects 443
- ■ 431 445
- ■ Start the Stretch command 446
- ■ Press ENTER 446
- ■ Enter 1200. Press ENTER 446
- ■ 435 449
- ■ 437 451
- ■ 441 455
- ■ 443 457
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