autocad editing commands

7/29/2019 Autocad editing commands

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AUTOCAD EDITTING COMMANDS

ERASE

COPY PEDIT

MIRROR

OFFSET

ARRAY

MOVE DIVIDE

ROTATE

SCALE

TRIM

EXTEND

BREAK

STRETCH

CHAMFER

FILLET

EXPLODE



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AUTOCAD EDITING COMMANDS

When you use AutoCAD Editing commands to modify the drawing you have

created with drawing commands you need to know how to select objects.AutoCAD provides you with three ways of selecting an object:

1- Individual selection.

2- Window selection.

3- Cross-Window selection.

Individual selection:

Also called Pickbox Selection, this method will allow you to select an

individual objects, you simply click on the object with your mouse. You

can continue selecting additional objects as needed, each object

selected will change appearance to dashed lines.

Window Selection: Will allow you to select several objects at the same

time. To make a window selection, you need to specify opposite corners,

from P1 to P2, that define a window area.

Only objects that are entirely within the window area are selected and

change to dashed lines. If any part of an object is outside the window,

that object is not selected and will not change appearance.



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Cross Window Selection:

Cross window selection will allow you to select several objects at the same

time. To make a window selection, you need to specify opposite corners,

from P1 to P2, that define a window area.

Any objects that are inside or touched by the crossing window are

selected. The cross window has a dashed appearance as shown in the

figure above.



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MODIFYING COMMANDS

COPY Command

In AutoCAD you can use Copy command to create duplicates of objects at

different locations from the original.

Procedures:

1- Select the Copy command from:

- Modify Toolbar.

-

Modify pull-down menu

- Type CO at command line.2- Select the object you want to copy.

3- At the "Specify the base point or displacement" Pick a point on the

object. This point will serve as handle for the object.

4- At the "Specify second point or displacement" pick a point on the

screen or enter distance. You can create multiple copies without

leaving the copy command.

OFFSET Command

The Offset command creates new object parallel to the original

object at specified distance and direction.

Procedures:

1- Select the Offset Command from:

- Modify Toolbar.



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- Modify pull-down menu

- Type Offset at command line.

2- At Specify offset distance or [through]: Enter a value or pick a

point on the screen.

3- At Select object to offset or <exit>: select the object.

4- At specify point on side to offset: pick a point on the screen you

want to place the new object.

Trim Command

The Trim command is use to shorten drawn lines to meet the edges of

other objects.

Procedures:

1- Select TRIM Command from:

- Modify Toolbar.

- Pull-Down menu



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- Type Trim at the command line.

2- Select cutting edge then press enter. See figure below.

3- Select object to trim then press enter. See figure below.

Example:



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Extend Command:

The Extend command is use to lengthen drawn lines to meet the edges of

other objects. When you use Extend command, you select lines as

boundary edges and extend other lines to those edges.

Procedures:

1- Select EXTEND from:

- Modify Toolbar or,

- Pull-Down Menu or,

- Type EXTEND at the command line.

2- Select boundary edges then press enter.

3- Select edge to extend then press enter to terminate the command.



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Example:

Mirror Command:

The mirror command creates a mirror image of objects. Mirror

command is useful for objects that present symmetry. You draw half

of the object and you mirror the other half.

Procedures:

1- Select Mirror command from:

- Modify Tool bar

- Pull-Down menu

- Type Mirror at the command line.

2- Select object then press enter.

3- At Specify first point of mirror line, select P1, see figure below.



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4- At Specify second point of mirror line, select P2, see figure below.

5- At Delete source object? [Yes/No] <N>. Press enter.

Example:

MOVE Command: This AutoCAD command will allow you to move objects

at specified distance in a specified direction.

To activate the Move Command use the following options:

1- Modify Toolbar



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2- Modify from the Pull-Down Menu

3- Type M for move at the command line and press enter.

Example: Sequence for the Move command



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Erase Command: The erase command is used to delete selected

objects from you drawing.

The command can be activated from:

- Modify Toolbar.

- Pull-down Menu.

- Command line: Type erase or e then press enter.

Procedure:

1-

Choose one the method described above to activate EraseCommand.

2- Select the object to erase then press enter.



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Fillet Command: The fillet command will allow you to round sharp

corner.

The command can be activated from:- Modify Toolbar.

- Pull-Down Menu.

- Command line.



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Procedure:

Command: Fillet

Current settings: Mode=TRIM, Radius = 20.000

Select first object or [ Polyline/Radius/Trim]: Type R to set the

radius.

Specify fillet radius<20.000>: 10

Select first object or [ Polyline/Radius/Trim]: Pick P1

Select second object: Pick P2

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