Intersect . need an explanation

intersect have a look.3dm (11.8 MB) I tried to intersect these and see that they are not where I would expect them to be. Is this what I should expect? — Thank you Mark

weird, no idea.

You can reduce your file size by removing the images embedded in it tho. (purge materials)

intersect have a look_purged.3dm (98.3 KB)

Hello - please see


Thank you Pascal, I am guessing it falls under the skinny long surfaces category or maybe A mesh setting.