Question: How do I make a series of spirals along the surface of a brep?

Hi, I’m an architecture student with minimal knowledge of grasshopper. I’m trying to make a series of spirals that are evenly spaced and as close to the surface as possible. I used Lunchbox’s diagrid to make the spiral I currently have in my definition. However, the curves are just created through a series of points. I want to interpolate/create nurbs curves to produce smooth lines but whenever I try to explode/extract these points, they continue to be straight. I’ve attached a screen shot with what I generally want the lines to do in blue. Would anyone have any solutions to this?

minimal module (26.3 KB)

I am not very happy with the spiral but it is smooth.

minimal module (29.3 KB)

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