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RE- Spun toroid sources





---------- Forwarded message ----------
Date: Mon, 06 Oct 1997 19:52:53 GMT
From: Robert Michaels <robert.michaels-at-online.sme-dot-org>
To: tesla-at-pupman-dot-com
Subject: RE- Spun toroid sources

        I favor Hipotronics.  They and several others advertise their
        wares in (my oft mentioned) "Thomas' Register of Manufacturers"
        under "High Voltage" listings.  (Come-on, Thomas, where's that
        commish ??)

        Information Unlimited (which advertises virtually every issue
        in "Electronics Now" and in "Popular Electronics") has long sold
        both spheroids and toroids in hobbyist grades at
        not-unreasonable prices.

        By consulting the "Yellow Pages" in most any good-size city it
        is possible locate shops which do custom metal spinning.  This
        will  =not=  be cheap but you can get most any size, shape, or
        thickness your little heart may desire.

                                - - - - - - - - 

        Metal-spinning is not hard, but for any but the thinnest metal
        in the smallest size objects it takes  =a lot=  of power.  Most
        amateurs do not have metal-spinning lathes and try to use wood
        lathes instead.  Most such do not have the moxie for any but
        the smaller projects.  Not only must the lathe be robust, but
        you must be also, if you are guiding the spinning tool by hand 
        as is the case with most amateur wood-lathe-as-metal-spinner
        efforts.  

        This is not to discourage any wood-lathe-based attempts.  You'll
        surely find it very educational.  And you'll be only too eager
        to purchase that professionally-made spheroid or toroid -- just
        as soon as you can force your poor aching hands and arms to
        reach for your credit card and endure the weight of a telephone
        receiver!

                                                Been around (and around)
                                                on this before, in ---
                                                Detroit, USA

                                                Robert Michaels