Hi ppj, for rendering purposes that will probably be ok though since the messy area is small in size and also kind of internal to the overall shape.

But that kind of self-intersecting surface will cause problems in many other kinds of operations, things like booleans will have problems operating in those areas because the intersection calculation between something like that is not very well defined. So from a kind of "NURBS solid model integrity" standpoint it is not good to have results like that.


Probably in v3 I will be able to experiment with an alternate mitering technique of basically taking the profile curve and rotating and stretching it and placing it at the corner areas, which should give a non-intersecting result usually but will probably not be 100% even tube thickness since it will make a kind of slanting effect.


- Michael