Great... now I need to buy a crystal and do something like this when my Lightsaber arrives.
Haven't even got my first one yet and already I'm planning customizations xD
If you don't mind my asking, could you give a bit more info on how you got the crystal to stay in place? I know you said you used some rubber washers but details would be great! ^^
I just used a few dabs of super glue. For the most part, it stays together on its own.