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Does anyone know of any sources for tesla coils and lasers?

For the tesla coil, I'm looking for something that will make roughly 12"
sparks like the one here:

http://www.amazing1.com/tesla.htm

Has anyone ordered from this company?  Does anyone know of any other
sources?  I looked through the normal vendors like Carolina and Frey,
but they seem to just have the small ones.

For the laser, I'm looking for something around a couple of
watts....high enough energy to burn things and pop balloons and other
assorted mayhem.  United Nuclear used to carry them, but they aren't on
their website anymore. (If you haven't ever checked out United Nuclear,
you have to see their stuff...check out the enormous rare earth magnets
about 3/4 the way down this page:

http://www.unitednuclear.com/magnets.htm )

Thanks,
Phil
Museum of Science & Industry, Chicago, IL

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