2013

Table Of Contents
When you create a helix, you can specify the following:
Base radius
Top radius
Height
Number of turns
Turn height
Twist direction
If you specify the same value for both the base radius and the top radius, then
a cylindrical helix is created. By default, the top radius is set to the same value
as the base radius. You cannot specify 0 for both the base radius and top radius.
If you specify different values for the top radius and the base radius, then a
conical helix is created.
If you specify a height value of 0, then a flat, 2D spiral is created.
NOTE
A helix is a spline approximation of a real helix. Length values may not be
completely accurate. However, when you use a helix as a sweep path, the
resulting values will be accurate regardless of the approximation.
See also:
Modify Helixes (page 278)
Create a Solid or Surface by Sweeping (page 348)
Draw Construction and Reference Geometry
Construction lines and reference points are temporary objects you create to
help you draw accurately.
Draw Reference Points
Point objects are useful as nodes or reference geometry for object snaps and
relative offsets.
Create Objects | 215