The crystal resisted Vader's initial attempt to make it bleed, showing him visions of a path where he turned away from the dark side and used the lightsaber to kill Palpatine. Vader fought this future, however, and was finally able to pour all of his pain into the crystal, turning it red.
Darth Vader 'Bleeds' The Kyber Crystal Red
By pouring their pain, anger, and Dark Side intent into the crystal until it can resist no more, and "bleeds." The new origin of a Sith's red lightsaber and crystal was first offered in the Star Wars novel Ahsoka, but the Darth Vader comics actually show it in action.
Vader eventually killed the Jedi Master and retrieved his curved-hilt lightsaber. He headed to Mustafar, where he bled the lightsaber's crystal, turning it from green to red.
The act of Bleeding a lightsaber's Kyber crystal is achieved when a Dark Side Force user channels all of their hatred and suffering into the crystal, imbuing it with Dark Side energy. A Bled Kyber crystal will often appear a little cracked and unstable, and it will give the lightsaber blade a red hue.
According to Pablo Hidalgo, of the Lucasfilm Story Group, kyber crystals only bleed during the construction of a lightsaber. So Darth Vader can use Anakin's lightsaber and it will stay blue, and in turn, if Luke or Obi-Wan use Darth Vader's lightsaber it will stay red.
The modified lightsaber incorporated a crossguard hilt based on an ancient design dating back to the Great Scourge of Malachor and contained a cracked Kyber crystal, requiring it to have lateral vents on either side of the handle in order to divert the extra heat generated by the crystal.
He poured his malice and darkness into his Kyber crystal to bleed it. But it turned out that he could lie to his feelings, and this caused the bleeding process to mess up. As such, the Kyber crystal became an unstable cracked object reflecting Kylo Ren's unstable personality.
Healing Kyber Crystals
While it's possible for the Sith to corrupt Kyber Crystals, it's also possible for the Jedi to restore them. The Chronicles of Brus-bu is one of the ancient Jedi texts that explains how Kyber Crystals can be healed after the Sith completes the bleeding process.
It was possible to "heal" the effects of bleeding on a kyber crystal, by using the light side of the Force, thus changing the crystal's color again. The process typically resulted in a white crystal.
Kylo Ren's lightsaber had a cracked kyber crystal, which generated an unstable blade. The excess power was vented out the sides, thus creating a crossguard-like design. The most important and prestigious vessels of the First Order had weapons upgraded with kyber crystals from some secret source in the Unknown Regions.
However, Vader wasn't just using the Bacta Tank to heal his body. Submerging himself in the substance reduced the pain he otherwise felt constantly to the point where he could meditate and study the Dark side of the Force. So perhaps Boba Fett is using the Bacta Tank for more than physical healing as well.
History. Bacta tanks already existed during the Clone Wars, when the Galactic Republic used them to treat its injured soldiers. A bacta tank was located in Darth Vader's castle on Mustafar, where the Dark Lord would relax and meditate outside of his life support armor with a modicum of comfort.
Darth Vader lost his left arm and both legs when Obi-Wan Kenobi defeated him on Mustafar. After turning to the dark side of the Force, Skywalker severed Mace Windu's right hand to save Darth Sidious when Windu tried to kill the latter.
He is lured to the dark side of the Force by Chancellor Palpatine (Darth Sidious) and becomes a Sith Lord, assuming the name of Darth Vader. After a lightsaber battle with his former mentor Obi-Wan Kenobi on Mustafar, in which he is severely injured, Vader is transformed into a cyborg.
But just before the blade made contact, Obi Wan transcended physical existence. and became one with the force, leaving behind only his robe and his lightsaber. Vader, puzzled by Obi wan's disappearance, took the lightsaber into his possession. He would later store it in his personal retreat.
All 4 Lightsabers Used By Anakin Skywalker (Including As Darth Vader) - IMDb. Anakin Skywalker wielded 4 different lightsabers across the Star Wars timeline (including his years as Darth Vader).
Black is the rarest lightsaber color in the world of Star Wars. For a while, the only known black lightsaber was the Darksaber, forged a thousand years ago and owned by a Mandalorian Jedi.
It appears rarely in the Star Wars universe—so rarely, in fact, that the current canon recognizes only one carrier of a white lightsaber. Ahsoka Tano, the former Jedi Padawan who aided in the rebellion against the Galactic Empire, is acknowledged as the sole possessor of the white lightsaber.
Jackson wanted his character to wield a purple blade on-screen. Jackson felt that a unique lightsaber color would enable his character to stand out among the sea of sabers on the screen during the chaotic Battle of Geonosis (from Episode II).
Though the crystals originally emitted a red blade, she purified them with the Force, turning them white. The hilts of the lightsabers were originally created from pieces of scrap metal that Tano had acquired over the year since the fall of the Republic, but were later modified to be more functional and decorative.
Kylo Ren has a seemingly "crude" lightsaber. This is due to a lot of things, but it seems to hold up pretty well, even against a lightsaber made by a Jedi (almost) Master. But throughout the movies, all lightsabers are basically shown to be indestructible, other than at the hilt.
In the construction of a Sith lightsaber, individuals partook in a process known as bleeding. By ways of the Force, they would pour negative emotions, such as rage, hate, fear, and pain into kyber crystals. The process would result in the crystals gaining a distinctive crimson or red hue.
A crystal embodies the Jedi as the heart of the lightsaber, and pure kyber has no color until it's bonded to the Force user. This process likely resulted in Rey Skywalker's lightsaber being yellow.
Even though Kylo Ren uses a red lightsaber, harnesses the dark side of the Force, and wears a cape, he is not a Sith. Because of that, he can never hold the title of Darth. Instead, he was just a chaotic mess of the dark side (until he eventually found his way back to the light).
Rey's lightsaber was a yellow-bladed lightsaber that was constructed by the Jedi Rey Skywalker following the First Order-Resistance War.