SubD - Extrude Edge after Radiate - Chair Demo Broken Geometry

Rhino SubD
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Using Rhino build 8.12.24282.7001 to try the subd chair demo and I can’t get the edges of the chair base to extrude without the geometry breaking. It works on one of the legs and partially on another. The one leg that works is the original (the one that got radiated) if that makes a difference. I can get the same issue to repeat itself with radiating a simple subd rectangle. Thanks for your assistance

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Hi @Alex00000 ,

I’d suggest only selecting the edges on the parent if possible like this…

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If the whole edgeloop is selected I can reproduce the same issue in my sample model and have filed it as https://mcneel.myjetbrains.com/youtrack/issue/RH-84282 for future reference.

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Thanks. So it’s some sort of bug in the software?

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Looks like it yes, the parent “motif” will differ though so if you post your 3dm file I’ll attach the example to the same bug report to make sure both work once the developers look at it.