Union creates weird geometry, seam line is not filletable

 From:  Michael Gibson
347.8 In reply to 347.7 
> Does exist like "red square" for points, the same alert for surfaces?

Nope, not yet.

Some surface problems aside from stacked-up points are hard to detect without a difficult calculation...

Some things like this are not so much something that you should avoid doing (like the stacked-up points), but instead they're more bugs in specific commands where the command itself needs to be fixed up.

- Michael