Source for Aluminum Spheres (up to 12" threaded)

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Mccauley, Daniel H" <daniel.h.mccauley-at-lmco-dot-com> 


If anyone is looking for a good source of Aluminum Spheres for use as
toploads or for strike balls, here is
a source which is relatively inexpensive.

http://www.americanflagstore-dot-com/hardware/goldball.htm

I recently was working with Ross Engineering to get a quote on 3" and 4"
diameter aluminum spheres, and they quoted
the 3" sphere at $310.00 each (qty 10-50) and 4" spheres at $350.00 each
(qty 10-50).  Thats absurd, especially
considering the same company quotes 20" x 3" toroid i was interested in
at $220.00 each.

Dan