Got a problem with one wall. At the walls I use Boolean Modifier for my sockets on one wall I see the holes for the sockets, on the other wall i see no holes. I don't think the problem is Blender, something must have gone wrong on the wall. What have I done wrong.
Thanks for watching Clone Borg
I found the error, it was the object. I had created all cylinders with duplicate link. With the original I had subsequently changed or deleted can no longer remember. At least I have now created new flush-mounted boxes. Thanks for your help