I can't slice extruded surface

I’m facing a small problem and I can’t figure out why it’s happening … I created a surface out of a catenary.with extrusion. Now I want to slice this surface with curves. The curves seems okay but the the surface doesn’t work with the SrfSplit block …

If anyone knows why it would really help me ! :smiley:
Thank you in advance !

if you need help share your file

Oh yes of course I forgot to share it sorry … :open_mouth:
script passerelle.gh (18.8 KB)

surface.gh (14.2 KB)

1 Like

Thank you very much ! :grinning:
I’m not sure I understand what is causing the problem in the first place …
I get it that it is because of the catenary but why ? :sweat_smile:

You created a polyline from lines and the result was brep not surface

1 Like

I get It ! Thank you ! :smiley: