Advantages and disadvantages of AutoCAD.

Advantages of AutoCAD:
1. A mid range Software
2. User Friendly
3. Fulfills most of the professional needs of a mechanical engineer
4. Lots of Time saving (but not always)
5. Paperless Environment
6. Ease of Accuracy — e.g. joining of lines head to head is not possible manually with desired accuracy
7. Easy to edit
8. Ease of Repetition / Addition
9. Reproduction of Drawing is easy, rapid and reliable in terms of dimensional accuracy and precision.
10. 2D and 3D production of drawings is very easy.
11. Zoom Command Facility allows us to see the minute details on larger scale view.
12. A facility of Modeling and making Parts library is available.
13. Parent – Child relationship allows multiple editing in single command, means if one part is edited all other linked parts are auto edited
14. Layers option allows us to hide or show some specific details of a complex assembly drawing for clear understanding.
15. There is no limitation of a Drawing size. You can draw a 2 light years long line through proper scale stetting.
16. Auto scale option is available. Full scale drawings can be formed.
17. Geometrical relationship can make quick mathematical operations easy, e. g. you can make an inscribed circle using dimensions of the triangle or polygon etc.
18. Mass, Area, Volume, Center of Gravity can be calculated
19. Auto Dimensioning – easy, accurate and rapidly done within no time.
20. Dimension Standards are strictly followed
21. Copy, scale, Move, Stretch, rotate, Pattern commands make the task simple and easy
22. Draw Guiding through Osnap, Ortho etc.
23. Direct and Quick Drawing of Symmetrical objects. e.g circle, ellipse, polygon rectangles and triangles etc.
24. Geometrical Relationships are possible. Like two parallel lines, Tangent lines, perpendicular lines etc.
25. Fixed line thickness throughout the drawing.—– remember that, ”by default, the line thickness of auto Cad is zero”
26. Fill, Hatch, Section lines, Chamfer and fillet commands make the software a blessing as these operations are very difficult in manual drafting.
27. Adding Text – Lettering – is a big facility
28. Images can be imported and traced out for digitization of conventional diagrams and drawings.

Disadvantages of Using AutoCAD:
1. Expensive equipment is required. like Computer, Plotter, big screen monitor etc.
2. Registered software is expensive and it requires a heavy re-occurring annual fee.
3. Continuous Updating of the equipment and software is needed.
4. Electricity is mandatory for running the equipment.
5. Piracy and hacking threats are always there when you use internet for data transfer or even storage of data on a computer which is connected to internet.
6. Special computer Skills are required.
7. Proper Maintenance, supervision and administration is required for computer networking.

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Draw a line using polar co-ordinate system in AutoCAD

1. Open AutoCAD software from desktop short cut or from start menu. 2. Now type "LINE" and press ENTER KEY. Then enter 0,0 as first point of the line. 3. Then type 5<30 as second point of the line. This "<" symbol is used for the line point moves to 30 degrees from positive x-axis. 4. Now again type 2.45<270 as next point of the line. 5. After generating the line press <Esc> key from key board to exit from line command. The lines shown like below image. BACK to Day-1 Lessions CLICK HERE to get CAD HOME Work help or project help (paid)

step by step procedure to locking and unlocking layers in AutoCAD

1. a)Open AutoCAD application from desktop shortcut menu. b)Select new document icon from quick access toolbar and open “ansi-a” template. c)Now click on model layout tab. d)Click on “LINE” command from draw panel. e)Now move the cursor to 4 units in X axis and 2 units in Y axis and pick the line stating point. f)Now move the cursor 2 units horzontally rights side and pick another point of the line. g)Like wise above steps move the cursor or cross hair to required points shown bellow image and pick the points to get the required shape. h)Finally enter “C” to close the line. i)And draw circle by using Circle command. j)And draw the center lines. k)Then apply it’s layers accordingly. Now select layers drop down arrow to see the total layer types. Now click on Lock icon of object layer and we can observe lock to be closed. See the image bellow. 2.Now double click circle element then AutoCAD shows the quick properties dailog box. 3.Now click on radius box in quick properti...

How to use Undo and Redo in AutoCAD

1. a)Open AutoCAD application from desktop shortcut menu. b)Select new document icon from quick access toolbar and open “ansi-a” template. c)Now click on model layout tab. d)Draw a line by using line command. 2. 3. 4.Now save the drawing by clicking on save icon from quick access tool bar. BACK to Day-2 Lessions

How to draw a line using cartesian coordinate system on graph paper?

The Cartesian coordinate system in two dimensions (also called a rectangular coordinate system) is defined by an ordered pair of perpendicular lines (axes), a single unit of length for both axes and an orientation for each axis. The lines are commonly referred to as the x- and y-axes where the x-axis is horizontal and the y-axis is vertical. The point where the axes meet is taken as the origin for both, thus turning each axis into a number line. For a given point P, a line is drawn through P perpendicular to the x-axis to meet it at X and a second line is drawn through P perpendicular to the y-axis to meet it at Y. The coordinates of P are then X and Y interpreted as numbers x and y on the corresponding number lines. The coordinates are written as an ordered pair (x,y). BACK to Day-1 Lessions CLICK HERE to get CAD HOME Work help or project help (paid)

Step by step procedure to divide elements with help of points in AutoCAD

1. a)Open AutoCAD application from desktop shortcut menu. b)Click on Open icon from quick access tool bar, and select “CH4_EXERCISE” then click on OPEN button to open the previous saved document. 2.Type “DIVIDE” command and press ENTER KEY. 3.Now select the line to be divide. 4.Now enter the value that how many divisions need to divide. Here enter “5”. 5.Now save the drawing by clicking on save icon from quick access tool bar.

Step by step procedure to select an object in AutoCAD 2015

1. a)Open AutoCAD application from desktop shortcut menu. b)Select new document icon from quick access toolbar and open “ansi-a” template. c)Now click on model layout tab. d)Click on “LINE” command from draw panel. e)Now move the cursor to 4 units in X axis and 2 units in Y axis and pick the line stating point. f)Now move the cursor 2 units horzontally rights side and pick another point of the line. g)Like wise above steps move the cursor or cross hair to required points shown bellow image and pick the points to get the required shape. h)Finally enter “C” to close the line. i)And draw circle by using Circle command. j)And draw the center lines. k)Then apply it’s layers accordingly. Pick a point (point 1 shown in below iamge) above the circle element and move the cursor left downwards. 2.Now we can observe the dashed rectangle filled with green color. 3.Now pick another point of selection below the circle. 4.Select Erase tool from modify panel. 5.Now click on Undo ic...

How to use Cartesian Coordinates in AutoCAD

Cartesian co-ordinate system is used to represent the X and Y coordinate values. We can draw elements by using a Cartesian coordinate system in AutoCAD. Generally in Cartesian coordinate system the x and y coordinate values are separated with comma (“,”). 1. See the two-dimensional cartesian coordinate grid system in the below image. 2. Generally co-ordinate system represents with its x and y co-ordinate values enclose with brackets. The first value in the enclosed brackets is for X value and the second value in the enclosed brackets if for Y value. The below image represents the line from (2,1) to (4,5). Syn: Type "LINE" and press ENTER KEY from key board. (the data we typed is inserted in command window). Then type 2,1 and press ENTER KEY. Then again type 4,5 and press ENTER KEY. Press <Esc> (escape) key to exit from line command. 3. The bellow line is drawn from (-2,-1) to (0,0). Syn: Type "LINE" and press ENTER KEY from key board. (th...

step by step procedure to placing dimensions in AutoCAD 2015

1. a)Open AutoCAD application from desktop shortcut menu. b)Select new document icon from quick access toolbar and open “ansi-a” template. c)Now click on model layout tab. d)Click on “LINE” command from draw panel. e)Now move the cursor to 4 units in X axis and 2 units in Y axis and pick the line stating point. f)Now move the cursor 2 units horzontally rights side and pick another point of the line. g)Like wise above steps move the cursor or cross hair to required points shown bellow image and pick the points to get the required shape. h)Finally enter “C” to close the line. i)And draw circle by using Circle command. j)And draw the center lines. k)Then apply it’s layers accordingly. Now select HOME tab menu. 2. Now click on layer drop down list by clicking on drop down arrow. 3. Now click on Annotate menu tab to display annotate tools. 4. Select Dimlinear tool after click on drop down arrow near dimension. See the below image for what happens after clicking on linear o...

Procedure to publish the drawing set in AutoCAD

1. a)Open AutoCAD application from desktop shortcut icon or start menu. b)Click on “Open icon” and select “welding_fx” file from database files then click on “Open” button to open the document. 2.Type “PUBLISH” command and press ENTER KEY. 3.Select “Welding_fix-Model” from sheet name list and click on “Remove” button. 4.Select “DWF” option from Publish to list. 5.Click on “Publish options” button. 6.Make sure “Multi-sheet file” as Type and “Include” as Layer information for general dwf options. 7.Click on Preview button to preview the drawing and click on close preview button. 8.Click on “Publish” button and give name as “CH15_EXERCISE5” and press ok button. 9.Click on “NO” button.

What is AutoCAD? What is the versions and uses of AutoCAD?

What is AutoCAD? AutoCAD is a computer-aided design (CAD) program used for 2-D and 3-D design and drafting. This application was developed and marketed by Autodesk. Versions of AutoCAD? Release no. Versions Released Date Description 1 AutoCAD 1.0 Dec-82 It was the first initial release of AutoCAD. It was demonstrated at the Comdex (computer expo trade show). The file format DWG R1.0 was introduced during the time of release. 2 AutoCAD 1.2 Apr-83 It was released after the first initial version. The file format DWG R1.2 was introduced. 3 AutoCAD 1.3 Aug-83 The file format DWG R1.3 was introduced. This version introduced add on features such as configuration, justified text, adjustment of alignment and plot origin, grid spacing, large plotter, standardized color numbers, and addition of header information in the DXF file. 4 AutoCAD 1.4 Oct-83 Some of the features were...

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