INTRODUCTION OF AUTO-CAD
 

•Mastering Auto Cad was design to demonstrate  commands in the text of every day activities that we encounter in our work.
•It shows what commands to be used in given condition.
•The AutoCAD instant references is the perfect companion to mastering AutoCAD for Mechanical Engineers.
•It also means that to include a photo –graph in AutoCAD drawing.

COMMANDS USED IN AUTOCAD
 

•There are many commands which are used in AutoCAD drawing.
•The commands are follows:--
 

1. LINE COMMANDS:- This commands is used to draw line by mouse. The syntax is “L” and then press “Enter”.

2. CONSTRUCTION LINE:- It is also called “ X-line ” . It is used to draw a hidden lines.

3. MULTI LINE:- It is used to draw many lines. It is also called “ M-line”. The syntax is “ Ml” and press “Enter”.

4. POLY LINE:- It is also called “P-line”. The syntax is “ PL” and press “Enter”.

5. POLYGON LINE:- It is used to draw hexagonal shapes.

6. RECTANGLE :- It is used to draw “Rectangles”. The syntax is “ REC”.

7. ARC:- It is used to draw “Arcs”. Syntax = “ARC”.

8. CIRCLE:- It is used draw circle for desired radius  Syntax = “C”.

9. SP LINE :- It is used to draw smoother and more controllable curves.Syntax = “ S ”.

10. ELLIPSE :- It is used to draw ellipse in horizontal or vertical.Syntax = “E ”.

11. HATCH :- It is used for Hatching after drawing. The hatching can be done through many types.
     

The given commands are used for drawing only.
Now the below commands are used for modifying the respected drawing:-

1. ERASE

2. COPY

3. MIRROR

4. OFF SET

5. ARRAY

6. MOVE

7. ROTATE

8. STRETCH

9. LENGTHEN

10. TRIM

11. EXTEND

12. FILLET

13. EXPLODE

14. 3-D ORBIT