by Paul Richard and Jim Fitzgerald Chapter 7 – Basic Editing Techniques

Understand the difference between editing objects using the verb/noun technique and editing objects using the noun/verb technique Use the ERASE command to remove objects from a drawing Learn different ways to select one or more objects so that they can be modified Move objects Copy objects Mirror objects Rotate objects Scale objects Stretch objects Use grips to modify objects

Activating a modify command Selecting the objects Noun = Drawing object Verb = AutoCAD command The Selection tab in the options dialog box The Modify panel NOTE You can display the Options dialog box using the following techniques: Select Options from the bottom of the application menu. Select Options... from the Tools menu. Right-click with your mouse in the command line window and select Options... From the Command Line shortcut menu. Right-click with your mouse when nothing is selected in the drawing window, and select Options... from the Default shortcut menu. Type OP or Options. NOTE You can display the Options dialog box using the following techniques: Select Options from the bottom of the application menu. Select Options... from the Tools menu. Right-click with your mouse in the command line window and select Options... From the Command Line shortcut menu. Right-click with your mouse when nothing is selected in the drawing window, and select Options... from the Default shortcut menu. Type OP or Options.

The verb/noun approach The UNDO command Entering U repeatedly

Selection Set Brief Definition / Full Definition Selecting Objects Individually Pickbox / Window / selection / Crossing selection Selecting Stacked and Overlaid Objects Cycling through stacked objects TIP You can also remove selected objects from the selection set by holding down the key and selecting the object you want to remove. TIP You can also remove selected objects from the selection set by holding down the key and selecting the object you want to remove.

C—Crossing Option W—Window Option

Press and Drag Window Mode Implied Windowing WP—Window Polygon Option

CP—Crossing Polygon Option F—Fence Option

All—All Option The All option selects all the objects in a drawing—even those objects that lie outside the visible drawing window. L—Last Option The Last option selects the last object created in a drawing. P—Previous Option The Previous option recalls the last selection set created so that you can modify the same objects again. TIP Objects that are on frozen or locked layers are protected when using the All option so that they are not selected. TIP Objects that are on frozen or locked layers are protected when using the All option so that they are not selected.

The Select Similar tool allows you to select an object and then automatically include all of the other objects in the drawing that are of the same type and share the same properties. The Select Similar Settings dialog Right-click menu with Select Similar tool

Groups panel allow you to do the following: Group Ungroup Edit Group Group Selection On/Off

You have three options: 1.Specify a base point. 2.Select the Displacement option. 3.Enter a displacement distance using Cartesian coordinates.

After you start the COPY command and select something, AutoCAD prompts you to Specify base point or, Similar to the MOVE command, you initially have these options: 1.Specify a base point. 2.Select the Displacement option. 3. Enter a displacement distance using Cartesian coordinates.

The Array option allows you to create a one-dimensional array of objects by specifying the total number of copies and either the distance between each copy or a total distance to automatically fit all of the copies. The Displacement option allows you to specify a displacement distance using rectangular or polar coordinates. The coordinate value you enter is always the relative distance the selected object(s) will be copied, even if you omit sign.

Mirror axis line Endpoints Mirroring Text MIRRTEXT

User specified rotation angle A base point as a Cartesian coordinate value Rotating objects using your mouse Use the Reference option Rotating and Copying Objects

User specified scale Using a Cartesian coordinate value Specify scale factor The Reference option Scaling objects using your mouse The Points option Scaling and Copying Objects

Using the Crossing Window selection options. Using the Crossing Polygon selection options. Stretching objects using mouse pick points The Displacement option

Grips act as object handles The five grip commands, or modes, are as follows: Stretch Move Rotate Scale Mirror

The other option is to right-click with your mouse to display the Grip shortcut menu. Grip shortcut menu

If you stretch a line using grips when Dynamic Input is on, the default dimension input field is a “delta,” or change, distance.

by Paul Richard and Jim Fitzgerald Chapter 8 – Advanced Editing Techniques

Offset objects through a specified distance Create polar and rectangular arrays Trim and extend objects Use the FILLET and CHAMFER commands to modify intersecting objects Break single objects into multiple objects Join separate objects into a single object Use the LENGTHEN command to modify the length of an object

Some of the advanced editing tools are located on the Modify panel.

The COPY command -vs- the OFFSET command The OFFSET command has three options, Through Erase Layer Offsetting an Object a Specified Distance

Rectangular Array Arraying at an Angle Creating a Polar Array Choosing a Polar Array Method

Rectangular Array Original Objects

Path Array Original Objects Path to Follow TIP You can change the length used to lay out the arrayed objects so that it is different from the actual path distance using the Total option. TIP You can change the length used to lay out the arrayed objects so that it is different from the actual path distance using the Total option.

Creating a Polar Array Original Objects Center Point

Selecting Cutting Edges Select and extra cutting edge TRIM Options: Fence Crossing Project Edge Erase Undo

EXTEND Options The options for the EXTEND command are identical to the TRIM command. Using the SHIFT Key to Switch Between Trim and Extend

Radius Option Multiple Mode Trim Mode The Polyline Option Capping Two Parallel Lines using the Fillet Tool

Creating Chamfers The Distance Option The Angle Option The Polyline Option

Creating a Gap in an Object Breaking an Object Exactly at a Point Breaking Circles, Xlines and Rays Selecting the Second Points

Lines Arcs Elliptical Arcs Polylines Spline Curves TIP It is possible to select and join multiple objects at the same time by selecting them as soon as you start the JOIN command. Typically, you can press when prompted to select objects again to quickly join the selected objects in one step. TIP It is possible to select and join multiple objects at the same time by selecting them as soon as you start the JOIN command. Typically, you can press when prompted to select objects again to quickly join the selected objects in one step.

Delta Option Percent Option Total Option Dynamic Option Invalid Objects