@nfuller Alrighty, thanks for your response! Just good to get an answer on it, even if it's not the one I was hoping haha. If restarting is necessary we'll probably wait until the next alpha build is released.
Keep up the great work!
Guess I was just holding out for a hotfix that would patch an existing world. The people who I play with have put a lot work into our world and were disappointed when we got to the missing parts of the tech tree needed for end-game. We've shut down our server to pause time and have been crusing the forums waiting for a hot fix that doesn't reset the server.
I managed to create an engine factory. Just wall off a section of your building and put a door (the item) there. That should count as its own room.
I should note though after I created it there wasn't any kind of crafting table inside of it, so It was a waste of sheet metal :\