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Re: flashing vs. whatever
From: Thomas McGahee[SMTP:tom_mcgahee-at-sigmais-dot-com]
Sent: Tuesday, November 25, 1997 7:22 AM
To: Tesla List
Subject: Re: flashing vs. whatever
>
> From: Barton B. Anderson[SMTP:mopar-at-mn.uswest-dot-net]
> Sent: Sunday, November 23, 1997 7:11 AM
> To: Tesla List
> Subject: flashing vs. whatever
>
> To all, a question for rolled polyethylene caps.
> I'm getting ready to begin plans for building these caps. My transformer
> matched cap value is .256uF. I'm planning on building three .083uF caps
> to achieve the (near) value. The plate area required is 2592 sq. inches
> (18" x 144"). I also plan on using four 4 mil sheets each side of plate
> for total of 8 between plates. In transformer oil the caps should prove
> durable assuming I get the air out.
>
> It seems those of you who have built this type of cap have used roof
> flashing. I'm not real familiar with roof flashing, but isn't it a bit
> thick for the purpose? At least the pulse caps I've seen have an
> extremely thin aluminum sheet. What advantage wood roof flashing give
> over say aluminum wrap bought at a grocery store?
>
> Just curious,
> Bart Anderson
>
>
Bart,
Egads! What a monster cap!!!
Flashing is extremely durable and fairly easy to work. It can handle
obscene current levels. It is reasonably cheap.
Heavy Duty aluminum foil is dirt cheap. You can cut it with scissors.
You can buy it everywhere. It works great. Easy to handle, but just a tad
shall we say "fragile".
I have used both. Each has its place. Mostly I use Heavy Duty aluminum
foil. I am a cheapskate at heart.
Halfway between the two is a Super Heavy Duty Aluminum Foil that is
used to make things like disposable pie pans and disposable heatable
food containers. The stuff is out there. I just don't have a handle
on a source for the raw stuff yet. Anyone out there got a source
for this stuff? Prices, availability, standard sizes??? C'mon, SOMEONE
on this list must have used this stuff. Let us know.
Hope this helps.
Fr. Tom McGahee