Hi,

I think you spent your time "beneficially" !
It would be even easier to create a helix or spiral if Michael improved the ThroughsPoints command so
the curve would have been built from a selected points (the analogy of Rhino's _CurveThroughPt command).

I use another way how to create (pseudo) helix or spiral, although it sometimes fails due to "inappropriate" position of lines for lofting.




Petr