How do you fill in open triangles after a ConvertLine SOP?

[SohailNordin]

So here's my geometry :

And then after appending the convert line SOP : 

Now i want to basically "undo" this and go back to having faces (for context i'm feeding these primitives into a grain simulation to tear it).

So i tried with the Polyfill set to triangles but it outputs an error.

I've tried using the ends SOP, fuse SOP, polydoctor SOP, etc to fix it but it still won't patch the open triangles.

Any advice on filling in the faces would be greatly appreciated.

Thank you!

[Sepu]

I do not understand what you are trying to do here. You already have the "faces" before the convert line SOP,  so use that for whatever you need to and use the lines for your sim if that is what you need.

[hannes603]

wireframe_prim_curves_to_triangle_polys_vop.hip   you can try something like that maybe