on another note, sometimes the preference files for Medium go bad and
crash you on start. if you delete those Medium will make new ones. here
is the default path to those files, just delete them and start Medium.
C:\Users\(user name)\Documents\Medium...
@FrozenPea Hey Frozen Pea. when you booleaned the object you created a
giant pocket of empty space within the geometry in the intersection, you
can tell where it is in the green stamp preview. Since the walls are so
thin Medium won't make any geometr...