Re: Mirror Ball as VDG Sphere?

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

Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jimlux-at-earthlink-dot-net>

Most Greenlee type punches require you to put a piece on each side of the
metal being punched.  I suspect a hole saw might be a better approach here.
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Saturday, August 24, 2002 10:12 AM
Subject: Re: Mirror Ball as VDG Sphere?


> Original poster: "robert heidlebaugh by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <rheidlebaugh-at-desertgate-dot-com>
>
>  DWP: drill a  guide hole ( yes it will be rough) then punch your hole
with
> a GREENLY HOLE PUNCH The punch is costly for just one hole, but it will
make
> a clean hole every time. You can get the punch from 3/8" to 4" so you can
> plan your size neaded. I role the edge with a hard wood cone in a fast
> drill. It smokes and stinks, but it works well.
>   Robert  H
>
> > From: "Tesla list" <tesla-at-pupman-dot-com>
> > Date: Fri, 23 Aug 2002 08:04:32 -0600
> > To: tesla-at-pupman-dot-com
> > Subject: Re: Mirror Ball as VDG Sphere?
> > Resent-From: tesla-at-pupman-dot-com
> > Resent-Date: Fri, 23 Aug 2002 08:06:25 -0600
> >
> > Original poster: "davep by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> > <davep-at-quik-dot-com>
> >
> >> I got this link from this list awhile back:
> >
> >> http://www.waterscapesweb-dot-com/orbs.html
> >
> >> I was eye-balling the stainless steel "mirror balls"
> >> as possible TC discharge terminals, but I've had mixed
> >> results using spherical terminals. The sphere doesn't
> >> seem to shade the top turns the way a toroid does, and
> >> the breakout goes any which way, including back to the
> >> base of the secondary! Plus, it causes problems with
> >> breakout from the top turns. Anybody getting good
> >> results with spheres?
> >
> >> Now what about a VDG terminal?
> >
> > What KIND of VdG terminal?
> > All manner of terminals have been used:
> > Spherical
> > modified spherical with curved re-entry,
> > 'donut' (Torus)
> > 'drum' with spherical top and curved
> > 'half toroid' bottom.
> >
> >
> >> I was thinking I could hire a machinist to bore a nice
> >
> >> round hole in one of these
> >
> > Lawn Balls?
> >
> >> and have myself a professional-looking VDG sphere.
> >
> >> However, I anticipate trouble with corona
> >> leakage at the rim of the entry hole, since it would
> >> not be beveled inward.
> >
> > Yep.  I would expect problems.  Professional
> > VDG spheres have carefully crafted reentrant
> > radius surfaces.
> >
> > best
> > dwp
> >
> > ...the net of a million lies...
> > Vernor Vinge
> > There are Many Web Sites which Say Many Things.
> > -me
> >
> >
> >
>
>
>