I have a deck floor that is flat. When I say it’s flat I mean it’s flat. I used inference locking religiously. It does form a solid face. There is no hidden geometry and when I scale it the only handles are the ones that show up when scaling a 2d surface…
That being said, when I try to draw a square on the surface to create a hole and it simply won’t intersect.
We’ve all experienced this I’m sure, so I went through all the “tricks” into getting it to work which 99% of the time they do. Creating the square away from the face then extruding it through and intersecting them etc. When I do that many hidden lines are created and I go about deleting them.
Two of those lines however are untouchable. If I delete them the whole surface disappears.
In bumping up the length-units accuracy to the maximum I measured (while locked on the blue inference) two points near where those troublesome lines occur and they seem to be off by 0.000002m
I went a step further (and wished I hadn’t) I changed the units to mm and found that almost every part of the surface is uneven. I use inferenceing constantly, I’m as careful as anyone I’ve seen model… I don’t understand what has happened here, why sketchup has such a hard time keeping flat surfaces flat and what if anything can be done about it.