hi frency. the last pic. where all three fillets go to that point. i'm not sure that is realistic. i'm not an expert though. put points in fea cause stress concentrations. in real life parts fatigue failures. from a manufacturing point of view, i don't think it's possible to create a point or a straight edge for that matter. CAD takes a lot of liberties. not sure what the op is trying to do though. it's an esoteric thing. not sure if it's relevant here. but something to watch out for if you are building real things.