Every jedi starts the game with a standard lightsaber that they crafted as a padawan. Once in play, characters may try to modify or create new light sabers. The basic rules (which are mostly acceptable) are under Lightsaber Construction. There are a few exceptions:

The Standard, Double click and Lock on switches are no extra difficulty. The Force activated does raise the DC by +15.

The Cell Recognizer has a total cost of only 350 credits. It can be retrofitted as a Difficult repair roll, or added initially for a +10 DC

Pressure Grip only costs 50 credits, Moderate repair roll to retrofit or +5 DC when created.

Waterproof Casing. 20 credits.