Re: Van de Graaff generator safety question (fwd)

[Steven Roys <sroys@xxxxxxxx>]

---------- Forwarded message ----------
Date: Sun, 4 Jan 2004 15:47:11 -0800
From: Jonathan Peakall <jpeakall@xxxxxxxxxxxx>
To: High Voltage list <hvlist@xxxxxxxxxx>
Subject: Re: Van de Graaff generator safety question (fwd)

Terry,

>
> BTW - If you have never seen a waterjet cutter do it's stuff, it is a
"must
> see"!!  A 30-mil jet of water with garnet powder added to give it cutting
> bite.  The water stream travels at about a mile a second (5 times the
speed
> of sound!) at 65,000 PSI driven by about 40HP!!!  It can cut 8 inches of
> mil grade titanium!!! and everything lesser...  Pretty scary machines to
> watch!!  I have used them to cut 6-4 military titanium which is super hard
> and accurately cut sorbothane which is super soft...

So, how small a sphere can you cut without blasting right through the other
side? I assume the pressure used is as low as will cut the work, but is
there any scarring? Or when the water cuts the work, does it disperse
enough? I sure would like to see a .5 million water cutter at work. One of
the disadvantages of living in a town of 390 ;-)

Jonathan

www.madlabs.info