Anybody know an easy way to model a SINE Wave?

I need to model a spider for a loudspeaker. The spider consists of
concentric sine wave convolutions, which vary in height and pitch. This
model needs to be fairly accurate so I can determine the height of the
curve wall where a large hole of a give diameter will be punched in the
center. The part already exists, so I know the various pitch and
heights along the wave crests.
Short of calculating numbers all day, is there a shortcut? Jack

 

The profile of a helix is a sine curve.

 

Brilliant.

TOP

PS

In a sketch draw a circle the diameter of which is the peak to peak
amplitude of the sine wave needed.
Draw a horizontal line from the center of the circle the length of which
is one wave length of the desired sine curve.
Using a polygon feature insert a polygon into the circle with enough
vertices to provide the accuracy you need. 8 or 12 vertices is usually
enough.
Divide the horizontal line into as many equal segments as there are
vertices on the polygon.
Constrain points corresponding to the polygons vertices and the points
on the horizontal curve and connect with a spline.

It seems to me that SW also included the ability to construct a curve
from an equation in 2009.