Rotate with kinked line caused a single unsplitable surface

Rhino Rhino for Mac
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Split%20rotated%20surfaces
Split rotated surfaces.png893×614 119 KB

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Looks like your CreaseSplitting got set to No. Type CreaseSplitting and set it back to Yes…

To fix the current model, use DivideAlongCreases SplitAtKinks=Yes…

HTH, --Mitch

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Thanks!!