There are training lightsabers, with a low setting so they inflict nothing more than burns or bruises and in Splinter of the Mind's Eye I remember Luke setting his lightsaber, at one point, to produce a thin beam to pick a lock or help him get through a door.
What are the different settings most lightsabers (as in a lightsaber your average Jedi might us) that are available? Is it just in terms of power, or are there other adjustments that can be made?
From the Star Wars: The Visual Dictionary (now "Legends" continuity)
This is confirmed in Star Wars: The Visual Encyclopedia (main canon)
From Wookieepedia:
While the Jedi used natural crystals, the Sith often used red-hued synthetic crystals. Sith-made synthetic crystals create a slightly more powerful blade when energized by the dark side of the Force, occasionally demonstrating the ability to "break" Jedi lightsaber blades, disrupting the energy circuit and shorting out the weapon, as almost happened to Obi-Wan Kenobi while fighting Darth Vader on the first Death Star.
From my understanding it isn't so much that standard lightsabers have different "settings", but different lightsaber crystals had differences in purity and strength that performed differently. For example, in the Jedi Acadamy series, Gantoris constructed a dual phase lightsaber that used three Corusca gems which allowed him to alter the length of his saber during his demonstration to Luke.
