Holographic blueprint

Holographic blueprints were instructions used when building lightsabers. The Sith constructed lightsabers according to holographic blueprints that were distributed among different cells. These designs were originally created by a Sith with a particular talent for mechanical construction. Auxiliary plans were sent to Kouru shortly after she completed her own lightsaber. She had observed the results of these designs when Kouru's master's lightsaber was rebuilt into a red-bladed weapon.

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