Lightsaber Blueprints

I work on making a real lightsaber for the Star Wars saga. I did most of the plans. I already know how I'm gonna party all stick and sword. The last part is to handle. The handle is the part that you hold. I buy most of the parts separately, and a few games. But I can not care because it is plastic and I can not do. Does anyone know where I can buy a hollow?

do wood or metal. Why has it to be plastic?

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The material is a plastic magic low melting point. drop it in boiling water and it softens so that you can mold to any shape you want. In the UK the brand is Metamorphosis and the United States, it is called Friendly Plastic, see
http://www.instructables.com/id/DIY-Mate ...