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How to draw a line using polar co-ordinate system.

we can use absolute or relative polar coordinates (distance and angle) to locate points when creating objects.



The polar coordinate system is a two-dimensional coordinate system in which each point P on a plane is determined by the length of its position vector r and the angle q between it and the positive direction of the x-axis.




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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)
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How to offesetting objects with construction lines in AutoCAD

1. a)Open AutoCAD application from desktop shortcut icon or start menu. b)Open previously saved document. 2.Click on the drop down arrow near Draw and select “XLINE” tool. 3.Select “Offset” tool. 4.AutoCAD prompts for offset distance. 5.Type “2” as offset distance and press ENTER KEY. 6.Select right side vertical line to offset. 7.Move the cursor right wards and pick a point to offset the selected element. 8.Now again AutoCAD prompts for selecting elements. 9.Pick top most horizontal line and move the cursor upwards and pick a point anywhere at upside to the selected element. 10.Press ENTER KEY to exit from “XLINE” command. 11.Now select “XLINE” from draw panel and select “Offset” tool and type “3” as offset distance and press ENTER KEY then select newly generated vertical line and move the mouse right wards and pick a point to offset the selected element in right wards. Again select “XLINE” from draw panel and select “Offset” tool from modify panel and type “3” as offset...
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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
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Exploring the AutoCAD user interface

When working with any application we must need to know the User interface for getting speed up the work with all tools in the application. 1. Open AutoCAD application from desktop short cut or start menu. 2. Now click on the big “A” icon locatated near top left corner of the application interface. 3. Now using mouse select the each option from the list displayed. 4. Click on Home menu to view the Home menu ribbon. 5. Click on drop down arrow near Draw panel to view the total draw tools. See the below image with expanded draw tools. 6. Now click on the drop down arrow near Circle to view circle sub options list. 7. Now select 3-Point Circle. 8. Now press “Esc” key from key board to exit from circle command. 9. Then see the circle icon again, it looks like 3 point circle icon setted as default. See the bellow image. 10. Right click on home ribbon to view pop up menu and move the cursor on to “Show panels” and turn off the “Draw” option. Now observe draw panel is di...
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The procedure to Activate Viewport in AutoCAD

In AutoCAD we can add number of layouts depending upon the print scale of drawings. Basically model space is used to create the drawings and other layout spaces are used to see the real time output drawings. We need to set the layout spaces according to printing size of the document. 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 double click on center of the ANSI A Tool box layout with mouse left button. After double clicking with left mouse button see the layout outline. In this layout the model space objects appeared. We can draw or scale the elements in this layout also. See the image bellow. 2. a) Whenever we move the cursor inside the dark lined layout, the cursor transforms like cross hair (looks like plus symbol shape). Whenever we move the cursor after this dark lined layout the cursor transforms its shape like arrow symbol. See the bellow two image...
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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.
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Change the layers to drawing elements 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. Now pick a point, that bellow left to the created object by usinng left mouse button and move the cursor upwards left. 2.After picking a point top right to the created object then we can see the all entities in the enclosed window appeared with blue boxes. 3.Now hold down the key from key board and select the blue colored center lines by using left mouse but...
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Procedure to create a block with attributes in AutoCAD

1. a)Open AutoCAD application from desktop shortcut icon or start menu. b)Click on “open icon” and select “acad” file then click on “Open” button to start new document. 2.Type “ATTDEF” and press ENTER KEY to create attributes. 3.Save the document by click on quick save icon from quick access tool bar.
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How to work with Grid display and snap mode 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)To turn off Gid display click on Grid icon from status bar or press “F7” key from key board. e)To turn ON snap mode click on Snap icon from status bar or press “F9” key from key board. 2.We can observe the cursor movement co-ordinates from status bar. 3.Now we can turn ON the grid display and turn off the Snap mode by clicking on the icons located near status bar or by pressing “F7” and “F9” function keys from key board. Now we can observe the cursor not locked to move the snap points. Note: The snap co-ordinates are locked only when the command is active. 4.Now TURN ON the SNAP Mode by clicking Snap mode icon from status bar. Then click on “LINE” command icon form Draw tools. NOTE: We can observe the 0.5 multiflied co-ordinate value after click on the line command. Incase the cursor locking va...
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