9.4 Putting It All Together


We've covered several new modification tools in this lesson using our star for demonstrations. The star is perfect for these demonstrations , but let's try a more practical exercise and use several of these tools to create something.

Do This: 9.4.1 A Practical Exercise

  1. Open the grad_cyl drawing from the C:\Steps\Lesson09 folder.

  2. Follow these steps.

    Tools

    Command Sequence

    Steps

    Command: z

    1. Adjust your view to the one shown in Figure 9.4.1.1a.

     


    Figure 9.4.1.1a:

    Command: ar

    2. Use the Array command to make four copies (five lines in all) of the cyan line below the one shown. The spacing should be -.01 (Figure 9.4.1.2a).

     


    Figure 9.4.1.2a:

     

    Command: len

    Select an object or [DElta/Percent/Total/ DYnamic]: t

    Specify total length or [Angle] <1.0000)>: .75

    Select an object to change or [Undo]:

    3. Use the Lengthen command to adjust the length of the top line to .75" (Figure 9.4.1.3a).

     


    Figure 9.4.1.3a:

    Command: cp

    Select objects:

    Select objects: [enter]

    Specify base point or displacement, or [Multiple]: 0,.5

    Specify second point of displacement or <use first point as displacement>: [enter]

    4. Copy the lines upward ½" for a total of 10 lines (Figure 9.4.1.4a).

     


    Figure 9.4.1.4a:

     

    Command: len

    5. Use the Lengthen command to adjust the length of the top line to 11/16" (Figure 9.4.1.5a).

     


    Figure 9.4.1.5a:

    Command: z

    6. Restore the previous view.

    Command: ar

    7. Use the Array command to place the graduations on the cylinder (Figure 9.4.1.7a). (The distance between sections is 1".)

     


    Figure 9.4.1.7a:

     

    Command: ed

    Command: e

    8. Use the text editor to change the numbers to read 10, 20, 30, 40, and 50. Erase the lines above 50. Your drawing looks like Figure 9.4.1.8a.

     

    click to expand
    Figure 9.4.1.8a:

     

    Your graduated cylinder is finished. Good job! Now let's draw a speedometer .

     

    Command: z

    9. Now adjust your view to get closer to the circle on the right (Figure 9.4.1.9a).

     


    Figure 9.4.1.9a:

    Command: o

    Specify offset distance or [Through] <Through>: .17

    Select object to offset or <exit>:

    Specify point on side to offset:

    10. Use the Offset command to copy the circle inward twice at .17" increments (Figure 9.4.1.10a).

     


    Figure 9.4.1.10a:

    11. Use the Array command to make 10 copies (11 lines altogether) of the line along a 36 ° arc (Figure 9.4.1.11a).

     

    click to expand
    Figure 9.4.1.11a:

    Command: tr

    12. Using the inner circles as cutting edges, trim the lines, as shown in Figure 9.4.1.12a. (Erase the right-most line.)

     

    click to expand
    Figure 9.4.1.12a:

    Command: e

    13. Erase the two inner circles.

    Command: ar

    14. Array the lines as shown in Figure 9.4.1.14a. (Make 9 copies “ 10 sets “ and fill a 360 ° angle.)

    Your drawing looks like Figure 9.4.1.14a.

     


    Figure 9.4.1.14a:

    Command: e

    15. Erase the bottom set of lines as shown in Figure 9.4.1.15a.

     

    click to expand
    Figure 9.4.1.15a:

       

    16. Add text and polylines (use the appropriate layers and a text height of 0.2 ) to complete the speedometer. (Hint: Draw the pointer pointing downward using Ortho, and then rotate it.)

     

    click to expand
    Figure 9.4.1.16a:

    Command: qsave

    17. Save the drawing.




AutoCAD 2004. One Step at a Time (Part 1)
AutoCAD 2004. One Step at a Time (Part 1)
ISBN: N/A
EAN: N/A
Year: 2003
Pages: 162

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