### AutoCAD Tutor - Thammasat University

```AutoCAD Tutorial
Instructor: Dr. Karndee Prichanont
Learning Objectives:
-Practice on basic operations
Reference
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You can view all materials from
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Textbook reference
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Title: Computer-Aided Engineering Drawing Using AutoCAD;
Author: Jensen, Helsel, and Voisinet; 1990
Title: Mastering AutoCAD Release 14; Author: Cheng; 1999
2
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Standard toolbar
Specific toolbars
The graphic area
View tabs
The command area
The status area
Command Entry
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Command area
Icons
File Operations
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File Operations
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New
Save
Open
Tools / Display Image…
5
Setting Up Drawing Environment
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Drawing units: Indicate metric unit in pop up window at start
up
 Format / Units…
- Decimal units
- Precision: 0.00
Limits
 Format / Drawing Limits
In command area,
Lower left corner: 0,0
Upper right corner: 200,200 (example: 20x20 cm)
Viewing
 View / Zoom… or select icons
(zoom all) or
(zoom
window)
 View / Toolbar… : select frequent operations
 View / Regenerate/ Redraw: to clear the clicked points 6
Basic Operations (1)
Coordinate systems
 Absolute coordinates:
• Cartesian (X,Y) or
• Polar (R<Ao)
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Relative coordinates:
• Cartesian (@X,Y) or
• Polar (@R<Ao)
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User defined coordinate system: USC
command - 3points option
Basic Operations (2)
2D drawing:
 lines:
 Select icon
or type line
• click the starting point and ending point on the
graphic area or
• type coordinates of these points
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Arcs:
 Select icon or type arc
• select points or key in coordinates of the points
according to requirements
Other commands: polyline (command= pl) , rectangle,
circle, etc.
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Basic Operations (3)
3D Drawing
 Select menu Draw – 3D objects –
sphere/box/cylinder/.. Then key in
parameters
 Select icons – key in parameters
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Basic Operations
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Snap modes( select endpoints, intersection)
 Select icons or click right hand side to obtain a float menu
 select suitable option
 Or go to Tools / Object Snap Settings…
Common modifying operations
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Erase: type e then select object to erase
Rotate: type rotate or select menu Modify / Rotate
Others: offset, array,
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2D object modifications: Select modify – select trim,
break, extend, etc.
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3D Object Modification select modify – select extrude,
union, etc.
Practice 1
Practice 2
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Submit the files
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Submit 2 practice files by 4 p.m. today to
[email protected]
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File name: yourname_1.dwg and
yourname_2.dwg
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Ex: karndee_1.dwg and
karndee_2.dwg
State your name and student ID in the
subject of email message
13
```