I started thinking because I can't sleep. The blade, I mean, the hilt obviously has to weigh something. Cause it's in the name, right? [u]Light[/u]-saber. Light doesn't weigh anything(or its mass is so little that it really doesn't matter). Then I remembered hearing that the blade is superheated plasma or something, does that have a significant weight to it? I see Obi-Wan and Anakin fight in episode 3 and they move so fast I assume their weapons are weightless. Now Kylo Ren fights Rey in TFA, his swings look pretty heavy. Or at least it looks like he puts a little power behind them. [i]And then[/i] I remember hearing that the blades weren't entirely special effects in the movie. They were physical and lit up about as bright as they are on-screen, on set. So maybe his swings look that way because the [i]prop[/i] is heavy-ish? Someone help.