Split Surface Please help urgently!

Does anyone know how i can split a surface without it tcreating naked edges. I have tried everything, trimming, capping, patching and nothings working . Please help if you can!

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please help!! thank you! i cant find anyway to split to this result without being unable to cap it!

this was the before the split.

Can you use .CAP to close the split polysurfaces?

I tried but it didn’t cap everything unfortunately.

Were the surfaces you tried to split - solids in the first place?

you can not split and cap non planar surfaces, use boolean difference instead, or to fix what you have use loft and join, and consider a rhino course that covers the basics.

Have you tried WireCut? WireCut | Rhino 3-D modeling

If you need to show a cross-section, you can also use a ClippingPlane for a non-destructive workflow.

Hello, I ended up being able to loft and join before I saw your response. I appreciate the response.

good, i am proud of you.