Here’s a conundrum, to me anyway.
I attach a simple model which forms the internal walls in a model of mine. But it clearly has some gremlins lurking within.
You will see that one space in the centre has a “ceiling” and no amount of drawing over the lines will allow me to isolate and delete it. Equally, the base of the wall is not closed. again, nothing I try to do will close it. Then try a horizontal section. Everything disappears.
I guess this might be a case where it is simplest to give up and start again, but if there is a way of identifying what is wrong, I’d like to know how to do that and then how to correct it. I find that this sort of thing happens when you have done a lot of editing, as I have with this.
Internal walls.skp (140.3 KB)