system
Given the following post, respond as if you're commenting on Reddit:
human
Who manufactures lightsabers? Can a lightsaber be made yourself?

I haven't read the novelization of the Star Wars series, so I am unaware if this has been answered before.

In Episode II, Obi-Wan informs Anakin that his lightsaber is very important and that he should try not to lose it. What if Anakin had lost his? Would the Jedi Order give him another? And then, in Episode IV, Obi-Wan gives Luke Anakin's lightsaber. What if Luke had lost it? Would he have been able to acquire a new one?

Where do the Sith get theirs?
gpt
Jedi (and Sith) assemble their own lightsabers. It is a rite of passage for a padawan.

Luke did lose Anakin's lightsaber on Bespin. He rebuilt one in the intervening months while planning Han's rescue.