AutoCAD 2004. One Step at a Time (Part 1)

Let's try a project using what we've learned. We'll draw the Ring Stand Base shown in Figure 5.5a.

Figure 5.5a:

Do This: 5.5.1 Polygons, Arcs, and Circles “ The Project

  1. Create a new drawing with the following setup:

    • Lower left limits: 0,0

    • Upper right limits: 17,11

    • Units: Architectural

    • Grid: ½

    • Snap: ¼

    • Textsize: 3/8

    • Font: Times New Roman

  2. Follow these steps.

    Tools

    Command Sequence

    Steps

    Command: z

    1. Zoom All to see the entire drawing.

    Command: save

    2. Save the drawing as MyStand to the C:\Steps\Lesson05 folder.

    Command: l

    3. Enter the Line command.

     

    Specify first point: 4,2-1/2

    Specify next point or [Undo]: @3<90

    Specify next point or [Undo]: [enter]

    4. Start at point 4,2 ½ and draw a 3" line upward.

    Command: [enter]

    Specify first point: 4-1/2,2

    Specify next point or [Undo]: @5<0

    Specify next point or [Undo]: [enter]

    5. Repeat the Line command. Then draw the second line as indicated.

    Command: [enter]

    Specify first point: 4-1/2,6

    Specify next point or [Undo]: @5<0

    Specify next point or [Undo]: [enter]

    6. Repeat the Line command. Then draw the third line.

     

    Command: [enter]

    Specify first point: 10,2-1/2

    Specify next point or [Undo]: @3<90

    Specify next point or [Undo]: [enter]

    7. Repeat the Line command. Then draw the fourth line. Your drawing now looks like Figure 5.5.1.7a.

     

    Figure 5.5.1.7a:

    Command: os

    8. Set the Running OSNAP to endpoint . Clear all other settings. (Remember to toggle the Running OSNAP On or Off using the F3 function key or the status bar toggle as needed!)

    Command: a

    9. Enter the Arc command.

     

    Specify start point of arc or [Center]:

    10. Select the endpoint of the second line nearest the fourth line.

     

    Specify second point of arc or [Center/End]: c

    11. Use the Center option.

     

    Specify center point of arc:

    12. Snap to the grid mark directly above the point you selected in Step 11.

     

    Specify end point of arc or [Angle/chord Length]:

    13. Select the lower endpoint of the fourth line.

    Command: a

    14. Repeat Steps 9 through 13 to draw the other three arcs. Your drawing now looks like Figure 5.5.1.14a.

     

    Figure 5.5.1.14a:

    Command: l

    15. Repeat the Line command.

     

    Specify first point:

    Specify next point or [Undo]: @1<180

    Specify next point or [Undo]: [enter]

    16. (Refer to Figure 5.5.1.14a.) Draw a 1" line from the left endpoint of the second line in the 180 ° direction.

    Command: l

    17. Repeat Step 16 at all four corners. Your drawing will look like Figure 5.5.1.17a.

     

    Figure 5.5.1.17a:

    Command: a

    Specify start point of arc or [Center]: 3-1/2,2-1/2

    18. (Refer to Figure 5.5.1.17a.) Now we'll draw an arc at the end of the first line. Start the command at the point indicated.

     

    Specify second point of arc or [Center/End]: c

    19. Use the Center option.

     

    Specify center point of arc:

    20. Select a point one snap down from the point selected in Step 18.

     

    Specify end point of arc or [Angle/ chord Length]:

    21. Select the endpoint of the first line.

    Command: a

    22. Repeat Steps 18 through 21 at the other four lines. Your drawing will look like Figure 5.5.1.22a.

     

    Figure 5.5.1.22a:

    Command: l

    Specify first point:

    Specify next point or [Undo]: @1/4<0

    Specify next point or [Undo]: [enter]

    23. Now add a ¼" line at the end of the first arc.

    Repeat for each arc. Your drawing will look like Figure 5.5.1.23a.

     

    Figure 5.5.1.23a:

    Command: a

    Specify start point of arc or [Center]: [select the endpoint of the line at the first arc]

    24. Now draw arcs at the end of the new lines (refer to Figure 5.5.1.29a). We'll start at the lower left corner.

     

    Specify second point of arc or [Center/ End]: e

    25. Use the End option.

     

    Specify end point of arc:

    26. The endpoint is one snap up and one snap to the right.

     

    Specify center point of arc or [Angle/ Direction/Radius]: d

    27. Select the Direction option.

     

    Specify tangent direction for the start point of arc:

    28. Select a point to the right of the point selected in Step 24.

    Command: a

    29. Repeat Steps 24 through 28 for the other arcs. Your drawing looks like Figure 5.5.1.29a.

     

    Figure 5.5.1.29a:

    Command: qsave

    30. It's a good idea to save your drawing occasionally!

    Command: c

    31. Draw a circle in the center of the first anchor leg.

    Specify center point for circle or [3P/2P/Ttr (tan tan radius)]: _cen of

    32. Use the center OSNAP to locate the center of the first arc.

     

    Specify radius of circle or [Diameter]: 1/8

    33. Use a 1/8" radius for the circle.

    Command: c

    34. Repeat Steps 31 through 33 for each of the anchor legs. Your drawing will look like Figure 5.5.1.34a.

     

    Figure 5.5.1.34a:

    Command: c

    Specify center point for circle or [3P/2P/Ttr (tan tan radius)]: 5,4

    Specify radius of circle or [Diameter] <0'-0 1/8">: 1/2

    35. Now draw the 1" washer using the Circle command.

    Command: c

    Specify center point for circle or [3P/2P/Ttr (tan tan radius)]: 5,4

    Specify radius of circle or [Diameter] <0'-0 1/2">: 1/8

    36. Draw the ¼" bolt center using the Circle command.

    Command: pol

    37. Draw the bolt using the Polygon command.

     

    Enter number of sides <4>: 6

    38. Give it six sides.

    Specify center of polygon or [Edge]: _cen of

    39. Place it in the center of the last circle you drew.

     

    Enter an option [Inscribed in circle/Circumscribed about circle] <I>: c

    40. Since we've a dimension on the bolt from flat side to flat side, we'll draw the polygon around a circle with that diameter. Type c for Circumscribed .

     

    Specify radius of circle: 7/32

    41. Type in 7/32 (half the given diameter). Your drawing now looks like Figure 5.5.1.41a.

     

    Figure 5.5.1.41a:

    Command: el

    42. Now let's draw the logo plate using the Ellipse command.

     

    Specify axis endpoint of ellipse or [Arc/Center]: 8-1/2,3

    43. Start at point 8 ½,3 .

     

    Specify other endpoint of axis: @2<90

    44. The ellipse is 2" along the long axis.

     

    Specify distance to other axis or [Rotation]: @1/2<0

    45. it's 1" along the short axis.

     

    Command: dt

    46. Add the ACME text to finish the project.

     

    Current text style: "times" Text height: 0'-0 3/8"

    Specify start point of text or [Justify/Style]: m

    Specify middle point of text: 8-1/2,4

    47. We'll middle-justify the text in the center of the ellipse.

     

    Specify height <0'-0 3/8">: [enter]

    48. If you set the textsize to 3/8 during the setup, it will default to that now. Otherwise, set it to 3/8 .

     

    Specify rotation angle of text <0>: 90

    49. Set the rotation angle so the text may be read from the bottom of the stand.

     

    Enter text: ACME

    Enter text: [enter]

    50. Enter the text.

    Command: qsave

    51. Save your drawing. It should now look like the sample in Figure 5.5a.

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