How to create a slice?

[timob2567]

I’m trying to create a slice from four surfaces (which consist of 12 curves).

I’m trying, but I can’t.

рукав.3dm (75.1 KB)

создать_рукав_площадь.gh (17.3 KB)

[kev.r (Kevin)]

Is this what you want?

создать_рукав_площадь_re.gh (12.7 KB)

-Kevin