This model was created by using an equation like this, where t went from 0 to 360.0

x = cos(t) * (sin(t*10)*1+5)
y = sin(t) * (sin(t*10)*1+5)

In essence, wrapping a 10x compressed sine wave around a circle with a radius of 5 (+1/-1). This was then projected into a sketch, extruded, and additional features were added.