I built a VDG a few days ago and I was kind of saddened by it's lack of power. anything I can do to make it better? i was thinking to use a static control brush for the lower comb, and I might try a sphere of copper for the receptacle i don't know if my goal is viable, ut I want it to be able to raise my ~2in. hair and maybe a few other experiments like the classic bbubble experiment it creates about a .25-.5 in. spark at longest, and I dont know where I can get a better belt (I am currently using 'natural' spandex), how thick and what material should it be??? any suggestions?