Graphics Programs Reference
In-Depth Information
6. At the Specify helix height or [Axis endpoint/Turns/turn Height/tWist]
<1.0000>: prompt, enter T ↵ to use the Turns option.
7. At the Enter number of turns <3.0000>: prompt, enter 15 ↵ to create a helix with 15
turns total.
8. At the Specify helix height or [Axis endpoint/Turns/turn Height/tWist]
<1.0000>: prompt, press ↵ to accept the default height of 1. The helix appears as a
spiral drawn to the dimensions you've just specified for diameter, turns, and height
(Figure 20.50).
FIGURE 20.50
The helix and the
helicoil after using
Sweep
In step 6, you used the Turns option to specify the total number of turns in the helix. You also
have other options that give you control over the shape of the helix. Figure 20.51 shows you the
effects of the Helix command options. You may want to experiment with them on your own to
get familiar with Helix.
FIGURE 20.51
The Helix com-
mand options
The Turns option
determines the number
of turns in the helix.
Axis endpoint lets you select
the endpoint of the helix to
adjust the helix direction.
Turn height lets
you specify the
height between
coils.
The tWist option
lets you determine
whether the helix
twists clockwise or
counterclockwise.
Center of base
 
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