I have two simply surfaces which I will merge. I´ve tried it to use the Fillet Surface Tool - but it seems to be, that there is anywhere a little problem, because the fillet tool doesn´t make the fillet as it should be.
Between the two surfaces are little holes (tears), and I don´t know why. The normals are all in the same direction....

What can I do to fix the problem ?
thank you all for help,
bernhard