Hi,

I was testing a few things and I came across something weird to say the least. Here the file. The red surface seems problematic and I wonder why out of curiosity of course?

I did a one rail sweep of the profile curve and used a scaling rail to generate a surface of which the red face is part. All curve are named and I also did a rebuild on both rails so they have the same number of control points, I thought it would help but it didn`t.

Thanks,
Felix