I am trying to creat a fluted dagger handle using Rhino CAD and have hit a wall. While I can create a helix around a perfect cylinder I cannot seem to create a helix (and then pipe and perform a difference) on the surface of a solide that has an irregular cylindical shape (like an hour glass or dagger handle in this case).
Does anyone know how this is done? Am I making sense?
Thank you.
Shane Harvey