Hi jonah,

> It can be a very useful tool, but dangerous in the wrong
> hands! Many times resulting in the question "why can't i
> fillet this edge?". And the usual response "because there
> is no edge there!"

You'll probably also run into other problems in Rhino with surfaces like that, like meshing not working correctly in all cases on such a kinked single surface and also potentially problems in surface intersection and booleans as well. Also you can't use Explode on that kind of thing to break it into components anymore like you normally would be able to do with a faceted object.

The nice thing about MoI's method is that it just works directly on a polysurface, there is no need to set a special mode to create unusual geometry and so you don't need to run into all those side effects.

- Michael