Items
Coral Cage
Let's cage an entire dimension
The coral cage is crafted like so:
The Coral Cage is used on a Coral Growth once it has fully matured, however your aren't done after placing the cage as you actually need to fill it in with 8 Plasmic Material and then it will be ready to finish.
The TARDIS can still be entered without the Coral Cage placed but you wont be able to complete it until you place the cage and fill it in.
Enjoy your new TARDIS. :)