Cutting Problem

Hey all, first off, I’m very new to Rhino – but it’s already causing me headaches.

I want to create a propeller blade. I want to cut the purple object with the white one and then have the resulting outside edge be curved. But when I try to split or cut the purple object with the white one, it says: “Split failed, objects may not intersect or intersections may not split object.” How should I do it properly?

Without a 3D file, it’s anyone’s guess.

You could try running the _Intersect command and see where the resulting curve fails to close.