Tythonian Forge

The Forge was an ancient monument erected in the Tythos Ridge of Tython by the ancient Tythonese as a place to construct weapons. The Jedi Order, which evolved from the early Force traditions there eventually adopted the Forge and used it in the creation of their lightsabers.

History
Established in the pre-history of the Jedi Order, the Forge was erected as a place of solitude where the ancient Tythonese could construct or repair their weapons in peace. The technology in the temple enabled the early Force-users to imbue their katana with the Force and make the material extraordinarily strong and razor sharp.

Eventually Tython was abandoned and the Forge was lost, with few records surviving in the Order's Archives on Coruscant. When the Great Galactic War between the Sith Empire and the Galactic Republic drove the Jedi back to their homeworld, scouts used the only information about the Forge's whereabouts to begin a ten month-long search for the ancient edifice. Upon discovering the crumble, vine-covered monument, the Jedi cleared the debris and began using the temple for the construction of lightsabers. Because of the treacherous journey to reach the spot, only the most hardy Padawans attempt the trek.

Behind the scenes
Although the Jedi Forge was first revealed in The New Essential Chronology, author Dan Wallace stated in 2005 that the concept was already developed for a future source yet to be revealed. 

Appearances

 * Star Wars: The Old Republic