Thanks guys Both ways work great !

Thanks Dave R.

I do not find the proper way to make a connection with a curved angle between the 2 different faces with a 90deg angle ... the cruved line to be at an agnle of 45deg.
In my printscreen, you get see a gap between the 2 faces. That is the one I would like to fill in.

Hello,

Could anybody tell me how I could close this curved corner ? Many thanks