Graphics Programs Reference
In-Depth Information
The POLYGON command draws regular closed polygons based on an imaginary
circle; the center of this imaginary circle is the point you just picked.
AutoCAD prompts you:
Enter an option [Inscribed in circle/Circumscribed about circle]
<I>:
7. Press Enter to accept the default Inscribed in Circle option.
The Inscribed option draws a polygon whose corners touch the circum-
ference of the imaginary circle. The Circumscribed option draws a polygon whose
sides are tangent to the circumference of the circle.
AutoCAD then asks you to
Specify radius of circle:
8. Turn on Ortho Mode by clicking the Ortho Mode button on the status bar until
you see <Ortho on> on the command line.
Ortho mode forces the crosshairs to move orthogonally — that is, in a precise hori-
zontal or vertical direction. (I describe Ortho mode more fully in Chapter 7.)
9. Move the mouse pointer to the right so the top and bottom sides of the polygon
are horizontal, but don't click yet !
10. Type 1.5 [38] and press Enter.
AutoCAD draws the nut, as shown in Figure 3-9. It's on the Nuts layer and inherits
that layer's red color.
The drawing afd03b-i.dwg [ afd03b-m.dwg ] contained in the af-
d03.zip download includes the base plate, column, and one anchor bolt.
If your nut-and-bolt looks just like Figure 3-9, way to go — you did it right! If, by
chance, your bolt is completely inside the circle, you probably missed Step 4 of the
“Circling your plate” section, earlier in this chapter, where I tell you to use the
CIRCLE command's Diameter option.
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