Comment: The 'device' you refer to as cutting steel pipe being wielded by

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The 'device' you refer to as cutting steel pipe being wielded by

John Hutchison is a LASER and it is not cutting steel pipe, it is melting through plastic pipe. They have been available for sale in various colors and wattages for years.

Here's one similar to the one he is using:
http://www.wickedlasers.com/arctic

Also there was a big deal made in this clip about the thin hoop (paper I think) being repelled away from the top of his Van de Graaff generator.

This is grade school physics. The hoop is called a charge carrier and since like charges repel, once the hoop has accumulated enough charge from the high voltage electrode via ion spray (which is visible in the dark), the repulsion force becomes greater than the weight of the hoop and off it will go seeking equilibrium or discharge.

The clip with Hutchison and his Van de Graaff was a joke. Ion canon indeed!