At this point, all that’s left is to right click the door to enter your TARDIS. Once you have crafted your TARDIS key, simply right click with it and a TARDIS will materialize around you (might want to get out of the way).
Kontron crystals can be found in dungeon chests with a decent frequency or manufactured by somebody who owns a TARDIS or a powered TARDIS laboratory. To own a TARDIS, the first thing you need is a Kontron crystal, which is used to craft a TARDIS key.
