Auto CAD Basics

                                                   Auto CAD  Basics

1.      One Dimension

2.      Two Dimension

Principles of Projection

1.      Orthographic View

2.      Isometric View

3.      Oblique  View

4.      Perspective View

Orthographic View

Ø  First Angle Projection

Ø  Third Angle Projection

First Angle ProjectionIn first angle angle projection all views must be exchanged their place. For example If somebody told you to draw a rough sketch of a  particular job which is which is said to view in First angle projection. First Imagine its then draw a front view first, from that imagine the bottom view draw at top, then right side view on the left and, left on right at last draw top view at the bottom. 

Third Angle Projection

In Third angle projection draw as it is, Top view at the top, left view  at left, right view  at right and at the last bottom  view at bottom

Show, what you see. Or draw what  you see.

Symbolic  View of First and Third Angle

Isometric View

Draw an isometric view refer with angle. Angle must be equal in both sides, if one side it at 30 degree for other side too must have 30 degree then it is said to be isometric view.

Oblique View

If it has one one side with the angle value, then it is said to be Oblique View

Perspective View

Ø  One Point

Ø  Two Point

Ø  Three Point

One Point View

The view is seen or shown with one respective point

Two points View

The view is seen or shown with two respective points

Three Points View

The view is seen or shown with three respective points

Advantages of Auto CAD software:

  

        Time Save

  Modification can done later

  Team work

Applications:

    

    Mechanical, Civil, Electrical, Medical

Drafting:

    

    Part Drafting

       Assembly Drafting