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Section 3 Creating Technology
as shown in Figure 13-15. Next, an X is
drawn on the top of the box. The center
of the X is the center of the top of the box.
The center point is the point where the top
of the cone or pyramid will come to. To
draw a pyramid, the designer draws lines
from the bottom corners of the box to the
center point. See Figure 13-18. To draw
a cone, an ellipse must be drawn on the
bottom of the box, just as when creating a
cylinder. See Figure 13-19. Lines are then
drawn from the sides of the ellipse to the
top center point.
Combinations
Unless the designs are simple prod-
ucts such as ice-cream cones or basket-
balls, the sketches created will have more
than one basic shape in them. Each of
these shapes must be blocked out. You
have learned how to block out shapes
using the isometric axes. Sketches with
more than one shape have more than one
set of axes. Imagine designing a guitar.
See Figure 13-20. You have several
boxes making the shapes of cylinders and
Step 1
Step 2
Step 3
Figure 13-17. Spheres are sketched using
these three steps.
Step 1
Step 2
Step 3
Step 4
Figure 13-18. Pyramids are sketched using
these four steps.
Step 1
Step 2
Step 3
Step 4
Figure 13-19. Cones are sketched using these
four steps.