[ScottEvtuch]

You can hold down a key (Ctrl I think) to force snapping to the "world grid" now. That makes everything you place line up even halfway across the map.

[pdntspa]

Or just place foundations and build on top of that

[swsieber]

The world grid snapping is only for foundations. But it allows you to have separate factories far away that eventually meet nicely together once expanded to meet.