Is there a way to orient a curve perpendicular to any point on a surface?

That sums it up. I think I’ve been down this road before, but need retrained.thanks ,Mark

What about _Line _Normal ?

Maybe this one?
http://docs.mcneel.com/rhino/5/help/en-us/index.htm#commands/orientonsrf.htm?Highlight=orient srf

Thanks Onetech. It was a huge help.

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Very helpful also Rodrigo. That was more of what I was looking for. That preview in action. thanks Mark

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