[Prev][Next][Index][Thread]
Re: how to spin metal
From: D.C. Cox[SMTP:DR.RESONANCE-at-next-wave-dot-net]
Sent: Wednesday, December 03, 1997 1:43 PM
To: Tesla List
Subject: Re: how to spin metal
to: Gary Weaver
Explosive forming is a great way to produce difficult shapes buy the hassle
of getting a Federal Explosive License is tough. I am a federally licensed
dynamiter -- used to do a lot of blasting with my grandfather back in the
60's and early 70's before insurance went to over $40K a year. You have to
have at least one year experience working with a blasting crew, provide
proof of insurance in the order of $1,000,000, and then build a special
explosives storage igloo, pay the Fed ATF inspectors a nice fee to inspect
it, and now you can purchase plastiques, ANFO, dynamite, NG, RDX, PETN, or
whatever explosive you might like to use for forming. I promise it will
cost you at least $50K to accomplish this (especially with the insurance
requirement). The complete data required to obtain a license is posted in
the Federal Register if anyone is interested. I maintain my license but no
longer actively do any blasting unless a contractor does the drilling and
runs me on their payroll under their insurance (large contractors who pay a
lot of liability and work comp insurance can get a "waiver" under their
insurance).
DR.RESONANCE-at-next-wave-dot-net
----------
> From: Tesla List <tesla-at-pupman-dot-com>
> To: 'Tesla List' <tesla-at-poodle.pupman-dot-com>
> Subject: Re: how to spin metal
> Date: Monday, December 01, 1997 11:55 PM
>
>
> From: gweaver[SMTP:gweaver-at-earthlink-dot-net]
> Sent: Sunday, November 30, 1997 11:45 AM
> To: Tesla List
> Subject: Re: how to spin metal
>
> Metal spinning is not easy. You can buy a special metal spinning lathe
that
> is designed to do nothing but spin metal.
>
> Explosive forming is much easier than metal spinning. Dig a dish shaped
> hole in the ground. Lay a sheet of metal over the hole. Lay a 1/4"
thick
> layer of plastic explosives over the sheet of metal. Place the detonator
in
> the exact center of the explosives. The shock wave travels out from the
> center to the edges. The metal is blasted into the hole and it will take
> the shape of the hole. It really works. The metal thickness has to be
> calculated so not to blast a hole in it.
>
> Gary Weaver
>
>
>
> At 05:27 PM 11/28/97 -0600, you wrote:
> >
> >From: Bill Noble[SMTP:william_b_noble-at-email.msn-dot-com]
> >Reply To: Bill Noble
> >Sent: Friday, November 28, 1997 12:09 PM
> >To: Tesla List
> >Subject: Re: how to spin metal
> >
> >also, check with a company called Skinned Knuckles - they publish a
magazine
> >for car restorers that carries a book on metal spinning - if you can't
find
> >the address, let me know and I'll look it up.
> >
> >>
> >>From: Jim Lux[SMTP:jimlux-at-earthlink-dot-net]
> >>Sent: Sunday, November 23, 1997 12:40 PM
> >>To: Tesla List
> >>Subject: how to spin metal
> >>
> >>
> >>> Can someone post the details on how spun metal toroids, or spheres,
> >>> are made? Or give me directions on how to find out?
> >>
> >>Lindsay publications has a book on it.
> >>
> >>
> >>
> >>
> >
> >
> >
> >
> >
> >
> >
> >
>
>