Seem right or not, Lightsabers have always canonically cast shadows. It's not a mistake on the part of the animators.
And again, a lightsaber blade is not composed of light. If you were to shine a flashlight on a lit glowstick, the stick would in fact cast a shadow. Shadows are simply the relative absence of light, and any object with mass is going to interrupt light from another source, whether it's glowing or not.
What kind of logic is that? Perhaps because they EMIT light? Or because it sounds cool?
If you think they are made of light, how do you think people become impaled upon them? How do you think they are opaque to blaster bolts (which, if sabres were made of light, woulld go straight through them).
What exactly do you mean by 'light' anyway? What kind of 'light' cuts through objects with no effort, though apparently without giving out any heat?
No-one knows what they are made of any more than anyone knows how an X-Wing works. It's just sci-fi stuff.
Originally posted by FistoFan
Then what are they made of? And if they're not made of light, then why are they called lightsabers?