Re: Mirror Ball as VDG Sphere?

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

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
> 
> 
>