That's really cool, but it would have been even cooler to see behind the scenes pictures of these sabers in use. I've thought for years that they should have been using Single or multi die LED sabers with polycarbonate blades to get the on set glow on the actor's faces and then they can add the signature glow in post production to further boost the look. It seems with Abrams desire to shoot as much of it as practically as possible, then this would be the best solution and when you consider that the guys providing R2 units and other droids are members of the R2 builders club you never know, we might even see some of our very own providing lightsaber props for the films! How awesome would that be?