[He's gonna try and feed something to it, she sees. He's gonna... yup. There's no sense of resistance at all as the stick contacts the blade, but a bit of vapor appears and the stick is shorter. Scout closes down her saber before someone gets hurt, and clips the hilt back onto her belt.]

Heat solid to get liquid, heat liquid to get gas, and basically if you heat gas enough you get plasma. Lightsabers are basically contained plasma.

[Dryly:] I'd rather no one played with it too much.