Loft failed: "Some, but not all of the curve end points touch"

Hi,

I tried to loft these curves. I could not figure why the curves are not closed. Thank you for your help in advance !

loft problem.3dm (34.3 KB)

Hello- the lone arc-like segments is a polycurve with two identical segments- explode it and delete one. However Loft is not what you want here - see Help on how that command works and what the valid input is - see also http://docs.mcneel.com/rhino/6/training-level1/en-us/Default.htm

This is a case where Patch might get you something like what you want but it is hard to see exactly, with just a bunch of curves floating in space - is there some surrounding geometry?

-Pascal

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