Step 9Step 8
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The next and finale step is to wrap the dead light bulb in a piece of aluminum foil. The key to making the aluminum hold more of a charge is to smoothen it out as much as possible. Then you cut off any aluminum that might be touching the metal part of the bulb, and place it into the PVC pipe. Then attach the top brush wire to the light bulb. Well, that's it you now know how to build a Van de Graff Generator from junk which can give a door knob like spark or do neat tricks. Now the only thing left for you to do is super size it and send your neighbors annoying cat into the next century.
Done that.
=D