[Fwd: Re: PFC Question]

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Original poster: vardan <vardan@xxxxxxxxxxxxxxxxxxxxxxx>


I don't suppose you have a picture of this setup anywhere?

Thanks!

Justin

On Wed, Nov 09, 2005 at 03:30:10PM -0700, Tesla list wrote:
> Original poster: Drbillpmt@xxxxxxx
> Hi all,
> I've been using 1/4-20 SS Acorn nuts for spark gaps for years. Just 
> a couple of weeks ago, I changed to 1/4-20 SS Carriage Bolts with 
> the heads flattened by chucking them into a drill and spinning them 
> against a rotating grinder wheel. This gives me a flat about 3/8 
> Inch in diameter. With about 150 CFM of air blowing the gap, they 
> survive quit well. Easy to make and cheap!
> After over 30 minutes of use, the surface is darkened but still 
> smooth to touch. BTW, the surface was polished on a deburring wheel 
> to remove grind marks. They are mounted in 1/2 x 1-1/2 x 2-1/2 
> Aluminum blocks using SS nuts to lock them into place, Have also 
> used them mounted in TO-220 Heat Sinks which works well too.
> Just do not try to tap the mounting holes, clearance holes with nuts 
> and washers, SS of course, aligns them better.
> Dr. Bill