Hi Bruno, yeah I do see the same thing over here. maybe that technique is not so good after all...

Maybe you could minimize that by extending the corner segments of the small side a bit too like this:



It can be a pretty difficult task to work with tightly bent curves.

As sort of a general rule you usually want to keep things like that sharp and use filleting later on to put in the tightly rounded corner areas rather than having them baked directly into your surfaces. But I'm not sure that's really an option for your case here.

- Michael