Major problems with BlendEdge, where am I going wrong?

Rhino Rhino for Windows
1

Here are the basic steps I’ve taken:

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image1500×666 621 KB

Look at the final BlendEdge results. Why is one corner utterly falling apart like this? Why are the other curves working nicely with uniformity/symmetry, and not this side? How can I avoid this, and at what point in my process did things go wrong?

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image1319×758 155 KB

File:

example.3dm (3.0 MB)

2

I don’t see that here. What radius did you use?

3

I see it. Radius 0.4. V7 only - it works correctly in V6. I’m working on a bug that is most likely the same thing. I’ll add this example to it. Thanks for the report. RH-59531 FIlletEdge inconsistency.

4

Bingo. I’m on V7, just saved to V5 for visibility.

Thanks Chuck!