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.
Open the grad_cyl drawing from the C:\Steps\Lesson09 folder.
Follow these steps.
Tools | Command Sequence | Steps |
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| Command: z | 1. Adjust your view to the one shown in Figure 9.4.1.1a. |
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| 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). |
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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). | |
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| 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). |
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Command: len | 5. Use the Lengthen command to adjust the length of the top line to 11/16" (Figure 9.4.1.5a). | |
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| 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".) |
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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. | |
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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). | |
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| 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). |
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| 11. Use the Array command to make 10 copies (11 lines altogether) of the line along a 36 ° arc (Figure 9.4.1.11a). | |
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| 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.) |
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| 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. |
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| Command: e | 15. Erase the bottom set of lines as shown in Figure 9.4.1.15a. |
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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.) | ||
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| Command: qsave | 17. Save the drawing. |