7 Replies Latest reply on Dec 22, 2010 12:00 AM by 1-V8OBKM

    How to draw a 3D helix with varying width and pitch?

      Hi, I'm a new comer to SW. Now I want to etch a spiral in a tapered tip just as the figure shows below. I know how to draw a single tapered helix but have no idea for this structure.

      Are there any method on this subject? Your kind help is greatly appreciated.

       

      Thanks,

       

      Guanghao

      helix.bmp