Surface Blending - Unexpected pinching

 From:  PaQ
1546.16 In reply to 1546.15 
Thanks guys for all you explanations, it's great learning place here. I get a good result by spliting the edges ... but also get the overlapping problem of course.

>> I personally would of changed construction to prevent such problems.

Well I'm still looking how I can improve the construction in this case :P