Define boundary

20230425curve through (24.1 KB)

Hi all
Does anyone know how to define/create the surface from the lines in the attached screen shots or how to trim offset edges to use the boundary surface component?

Best, keisuke

This could be a way and you could also use plugin features like Fennec’s Regions.

20230425curve through (23.7 KB)

Dear Hs_KIM
Thank you!
I installed the Fennec and found the region components.
I tried boundary surface after region components, but the plane wasnt created. do you know how to solve that?
Best, Keisuke

Heteroptera also has a feature.