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Re: turnoid question

Original poster: Ed Phillips <evp@xxxxxxxxxxx>

Got to wondering something this afternoon.  What are the real
advantages of a toroidal terminal vs a spherical one?  Reason for asking
is that I saw some throwaway thin plastic salad bowls at work this
afternoon that were almost perfect hemispheres about 22" in diameter.
It would be quite easy to take a couple of those, cut off the rim, and
then  cover them with some combination of heavy aluminum foil and
aluminum tape.