How Lightsabers Work: An In-Depth Guide

The focusing crystal, a kyber crystal, is the most important part of a lightsaber. These minerals are Force-attuned and appear on planets like Jedha, Ilum, and Dantooine. These crystals direct the Force into the blade and serve as key tech components. In the old Expanded Universe (now the Star Wars Legends), most crystals or gems worked in lightsabers. Now, only kyber crystals power lightsabers.Star WarsLegends

Anyone can use a lightsaber. Building one is a different task.The new continuity states that Jedi crystal caves test Force-sensitive people. If they pass, they get a kyber crystal.Jedi crystal caves test Force-sensitive people with a trial. Passing earns you a kyber crystal.

As Rogue One proved, you can dig up crystals if you have the means. Still, building a lightsaber is very hard. Using the Force helps a lot during construction.Rogue OneIf you have the setup, you can dig up crystals. Building a lightsaber, though, remains very complex. Using the Force helps put one together.

Lightsabers usually use one main crystal for a meter-long blade. Some Jedi and Sith want a longer blade, so they use multiple crystals.

Adual-phase saberA dual-phase saber uses two or three crystals. This lets the user change the blade length past a meter. Famous Jedi and Sith, including Darth Vader, used this type of saber.Jedi and SithDarth Vader used this type of saber in history.

Kylo Ren's lightsaber shows an unstable ripple because of his kyber crystal. His crossguard saber has a cracked crystal. This makes the blade energy unstable and unpredictable. This offers more damage, but it risks shorting out or exploding in the wielder's hands.

The two vents on his saber bleed off excess energy to keep it stable. Other crystals, like synthetic ones, carry different properties and create new blade effects.

Lightsabers need power. Any power cell of the right size works for a quick fix, even those from blasters. Jedi usually pick Diatium cells for long charge times. Some forward-thinking Jedi put spare power cells in the pommel for long missions.

When lightsabers started, power cells were too big for the hilt. Instead, they drew power from packs on the belt. A cable fed power from the belt pack to the blade. This setup carried a high risk; the cord could get cut by the user or an opponent.

A well-made lightsaber lasts decades. Blade quality depends on construction materials. Some lightsabers used whatever decent materials were nearby. Corran Horn built his saber from a swoop bike throttle assembly, for instance.

Those with time and resources build careful lightsabers. Darth Sidious made his saber from phrik, a rare metal that resists lightsaber blades. Wood and bone serve as other hilt materials.

Activating a lightsaber sends energy into a small space. This creates the blade but risks technical problems if construction fails. Insulate the power cell in the hilt. This stops energy discharge from damaging the weapon or user.

The cell's power moves through focusing lenses, turning raw energy into plasma. Plasma is the fourth state of matter; it is extremely dangerous. The plasma immediately enters the kyber crystal. Crystals focus this plasma, giving it special crystal properties.

Plasma passes the lightsaber crystal, then gets focused. Field energizers and modulation circuitry in the emitter assembly at the hilt send it as a beam. A containment field keeps this energy focused. These fields stop lightsabers from passing through each other when they touch.

Lightsabers operate as circuits; the circuit must be complete. A common mistake is inverting the emitter matrix. This sends the wrong charge to the power grid, causing the saber to backfire.

Usually, this causes the weapon to short out. Sometimes, a lightsaber backfires and explodes like a grenade. Always double or triple-check construction.

Lightsabers cut most things, but exceptions exist. Some weapons and materials stop lightsabers. The Expanded Universe featured cortosis, a metal that shorted lightsaber blades touching it. Phrik metal also resisted lightsabers. The Zillo Beast's hide and electrostaffs offered similar resistance. Even Jedi cannot handle certain things.

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