Week 5
Drafting 1309: Basic CAD
Andrew Amini
Professor Drafting and Design Engineering Technology, HCC
Quiz: Next Week
• Quiz: February 21, 2015
• Quiz will start at the beginning of class
• Review will be held today
1
Drawing Commands
Boundary-Creates a region or a polyline from an enclosed
area.
The Boundary Creation dialog box is displayed.
If you enter -BOUNDARY at the Command prompt,
options are displayed.
The interior point that you specify uses the surrounding
objects to create a separate region or polyline.
2
Drawing Commands
• PLINE- creates lines having properties such as thickness
and curvature. Polylines can be grouped together as a
single object. Such as a square will act as one object
instead of four separate lines.
• COMMAND: PLINE
Specify start point: Pick the start point of the polyline
Specify next point or [Arc/Halfwidth/Length/Undo/Width]:
Enter the desired option or pick the next point of pline
• Options: Arc- switches from drawing polyline to polyarcs
Halfwidth- Indicates the halfwidth of a polyline
Length-Draws a polyline tangent to the last segment
Undo-Erases the last segment drawn
Width-Determines the width of the pf the polyline
3
Editing Commands
• PEDIT- edits polylines, changes the location of individual
vertices in a polyline, and converts a non-polyline object
into a polyline.
• COMMAND: PEDIT
Select polyline or [Multiple]: Pick the object
Do you want to turn it into one? <Y>
Enter an option [Close/Join/Width/Edit
vertex/Fit/Spline/Decurve/Ltype gen/Undo]: J
Select objects: Select the remaining entities
Enter an option [Close/Join/Width/Edit
vertex/Fit/Spline/Decurve/Ltype gen/Undo]: W
Specifiy new width for all segments
• To convert simple lines and arcs into polyline use the join
option
4
Editing Commands
• To convert a polyline into simple lines and arcs use the
EXPLODE command
5
Editing Commands
• EXPLODE-converts blocks, polylines, associative
dimensions, hatch, multi-lines or solid into individual entities
• COMMAND: Explode
Select object: Select objects
• Note: Nested block-a block in a parent block. Explode one
grouping level at a time.
• Tips: Undo Command will restore the most recent Explode
command.
• Warnings: Once explode is executed, you can not
unexplode
6
Editing Commands
• XPLODE- breaks a compound object into its component
objects with specified properties for the resulting objects.
All- Sets the color, linetype, lineweight, and layer of the
component objects after you explode them.
Color-Sets the color of the objects after being exploded
Layer-Sets the layer of the component object after being
exploded.
Ltype-Sets the linetype after being exploded
Lweight- Sets the lineweight after being exploded
Explode-does what Explode Command does
7
Display Commands
•
REGEN- regenerates current drawing from the viewport.
•
COPYBASE- copies selected objects to the Clipboard
along with a specified base point. This is to allow the user
the ability to move different drawings between different
files in autocad.
8
Drawing Aids
9
AutoCAD Command
TIME-Displays the date and time statistics of a drawing
Current time. Displays the current date and time to the
nearest millisecond using a 24-hour clock
Created. Displays the date and time that the current drawing
was created.
Last Updated. Displays the date and time of the latest update
of the current drawing. This date and time is initially the
drawing creation time. The time is revised whenever the
drawing file is saved.
Total Editing Time. Displays the time spent editing the
current drawing. This timer is updated by the program and
cannot be reset or stopped. Plotting time is not included in the
total editing time. If you quit the editing session without saving
the drawing, the time you spent in the editing session is not
added to the accumulated editing time.
10
Auto Command-Time
Elapsed Timer. Runs as another timer while the program is
running. You can turn it on and off or reset it whenever you like.
Next Automatic Save In. Indicates the time remaining until the
next automatic save. You can set the time interval using
OPTIONS or the SAVETIME system variable.
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