Issue with lofting of multiple closed curves

[Joseph_Oster]

This thread is very similar:

How can I renumber curves? I want to renumber the curves according to Z-axis

There is no magical best solution that leaps to mind… Maybe sort the rings by the highest point on each ring? Seems to work, didn’t check all possible cases. [sort_curves_problem_2019Aug28a2] sort_curves_problem_2019Aug28a.gh (28.8 KB) [sort_curves_problem_2019Aug28a]

How can I renumber curves? I want to renumber the curves according to Z-axis

They Loft better when sorted, eh? But I see two areas that look ugly (twisted), even with “Align sections” enabled. Still needs work? To get a clean Loft, I added an Anemone loop (white group) after sorting them in sequence. It flips each curve and adjusts its Seam (start/end point) to match its predecessor. No Loft options required. [sort_curves_2019Jul10c] sort_curves_2019Jul10c.gh (131.8 KB) P.S. This is what Loft produces at three stages of the model. Left to right, below: …

If you post your geometry/code, you’ll get a better response.