NX is a versatile CAD software in that there are many possible ways you can model geometry. Today, we will look at an alternative way to model helix-like structures. You can use Variational Sweep in a special way to achieve the results you desire.
There is a powerful yet little-known capability in Variational Sweep that makes it posssible to model a helix. You can vary the sketch depending on the position along the path. The sketch plane contains an expression that you can use inside the sketch.