I figured it was something like that as well. Looks visually impressive if you don't know the trick. I had thought about assigning edges and guaranteeing they m

I figured it was something like that as well. Looks visually impressive if you don't know the trick. I had thought about assigning edges and guaranteeing they met in the backstage area, then almost as quickly realized it'd be way easier to take the solid, break it into pieces that fly off, then do that, time-reversed, in the backstage.