Corresponding curves - loft issue

[p.pec]

SRF DIVISION.gh (4.4 KB) Hi , I am not sure why the curves and relative offset curves aren’t matching in this definition . I am just trying to get a simple frame

SRF DIVISION.3dm (2.8 MB)

[Eef_Weenink]

after joining + offset, exploding is not needed.

• take care that the both curves are in the same branch (shift paths is used for that)
  and loft.
  
  

[Joseph_Oster]

There are several ways to deal with this, the easiest being ‘Loft options | Align sections’. This is another way:

SRF DIVISION_2026Sep7a.gh (11.9 KB)

[Joseph_Oster]

Another way is to take advantage of GH’s way of treating surfaces as edges and replacing OffsetS (Offset on surface) with Offset (Offset Curve):

SRF DIVISION_2026Sep7b.gh (13.0 KB)

Simpler and smaller. By the way, instead of referring to a Rhino file, you could create the original surface.

SRF DIVISION_2026Sep7bb.gh (10.6 KB)