Oh, I finally got it working! Now I understand: Editable Mesh has face (triangle) and polygon. And key.face expects a triangle (that’s why key.coord …

Hello, thank you very much for your help! As I understand, you copy the object into an Editable Mesh because many functions only work with Editable M…

Ok, I think I’m close to it. Maybe it’s fine to do as I did, with an attachment controller (otherwise, please suggest!) I see the dummies are actuall…