Error creating solid with Sweep1


I’m encountering an error when trying to create a solid using Sweep1. Could it be because the shape is too complex? Even after creating a surface and then attempting to generate the solid, I still get the same error. Please help.

rhino8 edu version.

SOLID_problems.3dm (174.6 KB)

You can select the profile curves, and use CurveBoolean to create a closed curve. Then extrude this profile along the path curve:

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Thanks to you, it was well resolved.