🚀 go-pugleaf

Some months ago, there was a discussion on magnetic levitation here in
sci.electronics. I didn't save any of the postings along that thread, and
since I now find myself _very_ interested in this subject, I'd like to ask
for help. Can anyone send me a summary if any such was ever posted?

Here's what I'd like to do: make a sphere (diameter approx. 25cm or 10 inch)
levitate approximately five cm (2 inch) above a bowl shaped surface.
The coils will (fortunately) be located under the lightweight sphere.

To minimize my own cut-and-try's:
Questions: Where can I find a suitable metal sphere? Would four (or even three)
coils do (for stability)? Have _you_ tried - what's your experiences?


Thanks in advance, 
-- 
   Per Hogstedt               Internet:  hogstedt@plab.se
   Lindholmen Utveckling            or:  hogstedt@ae.chalmers.se
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