The Zoom Out tool is used to zoom out the drawing by decreasing its size to half of the original size
of the drawing. To invoke the Zoom Out tool, invoke the Zoom flyout of the Navigation Bar and then click on the Zoom Out tool. Alternatively, enter Z or ZOOM in the Command Line window and then press ENTER. Next, enter .5X in the Command Line window to invoke this tool. Refer to the command sequence given below:
Command: Z or Zoom (ENTER)
Specify corner of window, enter a scale factor (nX or nXP), or
[All/Center/Dynamic/Extents/Previous/Scale/Window/Object]<real time>: .5X (ENTER)
NOTE: You can turn on or off the display of the Navigation Bar in the drawing area by using the Navigation Bar tool in the Viewport Tools panel of the View tab in the Ribbon, see Figure 2.60.
By default, this tool activated in the Viewport Tools panel of the View tab. As a result, the display of Navigation Bar is turned on in the drawing area.
Figure 2.60
Pan
The Pan tool is used to pan/move a drawing in the drawing area. To invoke the Pan tool, click on the Pan tool in the Navigation Bar, see Figure 2.61. After invoking the Pan tool, you can pan the drawing by pressing and holding the left mouse button and then dragging the cursor.
Figure 2.61
Tutorial 1
Draw the drawing shown in Figure 2.62 by specifying points using the Absolute Cartesian coordinate system. Also, use the Dynamic Input boxes for specifying coordinates. The dimensions shown in this figure are for your reference only. You will learn about applying dimensions in the later chapters.
Figure 2.62
Section 1: Starting AutoCAD
1. Double-click on the AutoCAD icon on your desktop. The initial screen of AutoCAD appears with the Start tab, see Figure 2.63.
Figure 2.63
2. In the Get Started section of the Start tab, click on Start Drawing, see Figure 2.63. The new drawing file with the default drawing template gets invoked.
NOTE: Alternatively, to invoke a new drawing file, click on the New tool in the Quick Access Toolbar, which is at the top left corner of AutoCAD. The Select template dialog box appears. In this dialog box, choose the acad.dwt template and then click on the Open button. A new drawing file with the acad.dwt template invoked. You can also right-click on the Start tab and then click on the New option in the shortcut menu appeared. Additionally, you can click on the + sign available next to the Start tab to invoke a new drawing file.
Section 2: Selecting Workspace for Creating Drawing
1. Click on the Workspace Switching button in the Status Bar. A flyout appears, see Figure 2.64.
Figure 2.64
2. In this flyout, make sure that the Drafting & Annotation option is tick-marked to create drawings in the Drafting & Annotation workspace.
NOTE: A tick-mark next to a workspace indicates that it selected as the current workspace for creating drawings. By default, the Drafting & Annotation workspace selected as the current workspace for creating drawings. You can click on any workspace to make it current for creating drawings.
Section 3: Defining Limits for the Drawing
1. Follow the command sequence given below for defining limits for the drawing.
Command: LIMITS (ENTER)
Specify lower left corner or [ON/OFF]<0.0000,0.0000>: 0,0(ENTER) Specify upper right corner <12.0000,9.0000>: 160,130 (ENTER)
Section 4: Creating Drawing by Using the Absolute Coordinate System
As stated in the tutorial description, you need to enter coordinates in the Dynamic Input boxes according to the Absolute Cartesian coordinate system for specifying points. To enter coordinates in the Dynamic Input boxes, you need to make sure that the Dynamic Input mode is turned on.
1. Make sure that the Dynamic Input mode is turned on. You can turn on or off the Dynamic Input mode by clicking on the Dynamic Input button in the Status Bar. It is a toggle button.
2. Click on the Line tool in the Draw panel of the Home tab. The Line tool gets activated, and you are prompted to specify the first point of the line. Alternatively, you can enter L in the Command Line window and then press ENTER to activate the Line tool.
NOTE: In the Absolute coordinate system, the coordinate values measured from the origin. To specify coordinates in the Dynamic Input boxes according to the Absolute coordinate system, you need to enter # as a prefix to the X coordinate and then followed by the Y coordinate.
3. Follow the command sequence given below for creating the drawing.
Specify first point: 0,0 (ENTER)
Specify next point or [Undo]: #55,0 (ENTER) Specify next point or [Undo]: #25,0 (ENTER) Specify next point or [Undo]: #80,25 (ENTER)
Specify next point or [Undo]: #80,55 (ENTER)
Specify next point or [Close Undo]: #65,65 (ENTER) Specify next point or [Close Undo]: #0,65 (ENTER)
Specify next point or [Close Undo]: C or Close (See Figure 2.65) Command: Z or Zoom (ENTER)
Specify corner of window, enter a scale factor (nX or nXP), or
[All/Center/Dynamic/Extents/Previous/Scale/Window/Object]<real time>: A or ALL (ENTER)
Figure 2.65
Command: C or Circle (ENTER)
Specify center point for circle or [3P 2P Ttr (tan tan radius)]: 25,30 (ENTER) Specify radius of circle or [Diameter] <7.6802>: D (ENTER)
Specify diameter of circle <15.3603>: 25 (ENTER) (See Figure 2.66)
Figure 2.66
Command: C or Circle (ENTER)
Specify center point for circle or [3P 2P Ttr (tan tan radius)]: 50,50 (ENTER) Specify radius of circle or [Diameter] <7.6802>: D (ENTER)
Specify diameter of circle <15.3603>: 15 (ENTER) (See Figure 2.67)
Figure 2.67
Section 5: Saving the Drawing
After creating the drawing, you need to save it.
1. Click on the Save tool in the Quick Access Toolbar. The Save Drawing As dialog box appears.
2. Browse to a local drive of your system and then create a folder with the name AutoCAD.
3. Create another folder with the name Chapter 2 inside the AutoCAD folder. Next, enter Tutorial 1 in the File name field of the dialog box.
4. Click on the Save button in the dialog box. The drawing saved with the name Tutorial 1.
Tutorial 2
Draw the drawing shown in Figure 2.68 by using the Relative Polar coordinate system. Also, use the Dynamic Input mode for specifying coordinate points. The dimensions shown in this figure are for your reference only. You will learn about applying dimensions in the later chapters.
Figure 2.68
Section 1: Starting AutoCAD
1. Start AutoCAD and then click on the New tool in the Quick Access Toolbar, which is at the top left corner of the screen, see Figure 2.69. The Select template dialog box appears, see Figure 2.70.
Figure 2.69
Figure 2.70
2. In the dialog box, click on the acad.dwt template and then click on the Open button. A new drawing file with the acad.dwt template invoked.
3. Make sure that the Drafting & Annotation workspace selected as the current workspace for creating the drawing.
Section 2: Drawing Line Entities
As stated in the tutorial description, you need to enter coordinates in the Dynamic Input boxes as per the Relative Polar coordinate system for specifying points.
1. Make sure that the Dynamic Input mode is turned on. You can turn on or off the Dynamic Input mode by clicking on the Dynamic Input button in the Status Bar. It is a toggle button.
2. Click on the Ortho Mode button in the Status Bar or press the F8 key to turn on the Ortho mode. By activating the Ortho mode, you can create horizontal or vertical straight lines only.
3. Click on the Line tool in the Draw panel of the Home tab. The Line tool invoked, and you are prompted to specify the first point of the line.
NOTE: In the Relative Polar coordinate system, the distance and angle values measured from the last specified point in the drawing area.
4. Follow the command sequence given below for creating the drawing.
Specify first point: Click the left mouse button in the drawing area to specify the first point
Specify next point or [Undo]: Move the cursor horizontally toward the right and then enter 20 in the Dynamic Input box (ENTER) (See Figure 2.71)
Figure 2.71
Specify next point or [Undo]: Move the cursor vertically upward and then enter 5 (ENTER)
Specify next point or [Undo]: Move the cursor horizontally toward the right and then enter 20 (ENTER)
Specify next point or [Undo]: Move the cursor vertically downward and then enter 5 (ENTER) Specify next point or [Close Undo]: Move the cursor horizontally toward the right and then enter
20 (ENTER)
Specify next point or [Close Undo]: Move the cursor vertically upward and then enter 30 (ENTER) (See Figure 2.72)
Figure 2.72
Specify next point or [Close Undo]: Move the cursor horizontally toward the left and then enter 20 (ENTER)
Specify next point or [Close Undo]: Move the cursor vertically downward and then enter 5 (ENTER)
Specify next point or [Close Undo]: Move the cursor horizontally toward the left and then enter 20 (ENTER)
Specify next point or [Close Undo]: Move the cursor vertically upward and then enter 5 (ENTER) Specify next point or [Close Undo]: Move the cursor horizontally toward the left and then enter 20
(ENTER)
Specify next point or [Close Undo]: C or Close (See Figure 2.73)
Figure 2.73
Command: Z or Zoom (ENTER)
Specify corner of window, enter a scale factor (nX or nXP), or
[All/Center/Dynamic/Extents/Previous/Scale/Window/Object]<real time>: A or ALL (ENTER)
Section 3: Erasing the Unwanted Entities of the Drawing
1. Click on the Erase tool of the Modify panel of the Home tab or enter E in the Command Line. The Erase tool is activated, and you are prompted to select the objects to be erased.
Select objects:
2. Click on the right and left most vertical entities one after another as the entities to be erased, see Figure 2.74. Next, press ENTER. The selected entities are deleted, see Figure 2.75.
Figure 2.74
Figure 2.75
Section 4: Drawing Arcs
1. Click on the down arrow at the bottom of the arc tool. The Arc flyout appears, see Figure 2.76.
Figure 2.76
2. In this flyout, click on the Start, End, Radius tool, see Figure 2.76. The Start, End, Radius tool is activated, and you are prompted to specify the start point of the arc.
Specify start point of arc or [Center]:
3. Click on the Object Snap button in the Status Bar to activate the Object Snap mode. You will learn more about Object Snap mode in later chapters.
4. Move the cursor over the end point of the lower rightmost horizontal line and then click to specify the start point of the arc when the cursor snaps to the end point of the line, see Figure 2.77.
Specify end point of arc:
Figure 2.77
5. Move the cursor over the end point of the upper rightmost horizontal line and then click to specify the end point of the arc when the cursor snaps to it, see Figure 2.78.
Specify center point of arc or [Angle Direction Radius]:_r Specify radius of arc:
Figure 2.78
6. Move the cursor horizontally toward the right and then enter 15 as the radius of arc in the Dynamic Input box, which appears near the cursor in the drawing area. The arc drawn, see Figure 2.79.
Figure 2.79
7. Similarly, draw an arc on the left side of the drawing by using the Start, End, Radius tool, see Figure 2.80.
Figure 2.80
Section 5: Saving the Drawing
After creating the drawing, you need to save it.
1. Click on the Save tool in the Quick Access Toolbar. The Save Drawing As dialog box appears.
2. Browse to the Chapter 2 folder, inside the AutoCAD folder. If the folders have not created in Tutorial 1 of this chapter, then you need to first create these folders on a local drive of your system.
3. Enter Tutorial 2 in the File name field of the dialog box and then click on the Save button. The drawing saved with the name Tutorial 2.