So you're cooking a crystal.

[She leans out of the oven now, soot smeared across her face in a few places. When she reaches up to rub at her cheek, it just smears.]

And you're going to use the crystal to build a laser sword. That's actually called a lightsaber. And you can only do the whole thing one time?

[It sounds like a lot of work, so it must be important that he gets one.]

What are you going to use it for?