Helix creation following a spline

[Chom]

Help. I need to create a helix that will follow a 3D spline rather than a axis. I have tried the helix command in GSD but cannot make it follow anything but a line or vector. Any ideas?

 

[silverunner]

One way that worked for me was to create two sets of sweeps, 1st to create a reference surface (using the spline) and 2nd to sweep along the spline and controll the angle with a Law.
Run a circular profile through the spline and then do an intersect between the circular profile and the second sweep.
The intersect curve will give you a helix along a spline.
Hope this helps.

 

[flangewiper]

Not exactly sure what you're trying to construct, is it some kind of thread or spring but maybe you could try using Sweep surface in GSD with a circle profile (3rd icon fron the left) and use the centre and radius subtype. This will allow a circular profile to be driven along a spline