Jim proved it. And through studying the many things that he’s said, I’ve realized he’s 100% correct about ‘fillet edge’ being the wrong approach.
I’m not sure if my perception of the matter is exactly the same as his, but he helped me realize there’s definitely a problem with ‘constraining’ fillets to be driven by ‘edges’ – especially when Rhino does such a bad job dealing with the edges and leading to failures.
I suppose, if you allow the failure to output something, by turning off the ‘trim’ aspect, then you get something to play with. So, it’s all relative.
Maybe it’s time for another ‘filletedge’ failure review.