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Re: Salt Cap

Original poster: "Barton B. Anderson" <bartb@xxxxxxxxxxxxxxxx>

Hi Chris,

I made some salt water caps (beer bottles, wine corks). However, if I were to do it again, I would use mason jars. You can buy them by the case. The lid is metal and screws on. Should be pretty easy to work out the electrode and hold 20oz which in itself is a plus. Just thought I'd throw that out there. You can find the mason jars are most grocery stores.

Regarding the jars you were looking at? Well, probably fine except they are rather small and you still have to figure out the plug and electrodes mount.

Taka care,
Bart

Tesla list wrote:

Original poster: "Chris Rutherford" <chris1@xxxxxxxxxxxxxxxxxxx>

Would anyone recommend 250ML lab reagent bottles or are they too small or of the wrong dimensions?

http://www.gandmtools.co.uk/cat_leaf.php?id=1609


Thanks

Chris


----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Tuesday, July 05, 2005 12:08 AM
Subject: Re: Salt Cap


Original poster: Davetracer@xxxxxxx
In a message dated 7/3/2005 10:14:47 P.M. Mountain Daylight Time, tesla@xxxxxxxxxx writes:
Original poster: Mddeming@xxxxxxx

In a message dated 7/3/05 2:12:42 P.M. Eastern Daylight Time,
tesla@xxxxxxxxxx writes:
Original poster: Adam Britt <beans45601@xxxxxxxxx>

its still not worth it.

-Adam



    "For a given value of 'it' " ?

I just built a neon sign powered coil (12kv/60 ma). I'm low on spare change at the moment.

So I wandered by WalMart and got a big metal pot. My son picked up some copper tubing, then bent it into continuous bottle-shaped segments, so the bottles going in had support, and also had whatever benefit possible from having the current and voltage "piped" right to the bottles. Then I picked up a 12-pack of Corona [no pun intended] beer, poured out the beer, filled with water to about 2" from the top, and used some thick copper wire to form center electrodes for the bottles. I used table salt both inside and outside. Finally I filled the pot with water to the same level as the bottles. The pot sits on thick books to keep from accidentally zapping into the floor.

Results: It works fine. There has not been a punchthrough yet [knock on wood]. The copper tubing inside keeps the bottles from falling over quite nicely, and the Corona bottles are just wonderful with their long necks; in fact someone on the list recommended them.

I don't see any point in using oil, laxatives, chocolate or concrete. (Of course those are probably for a different design of caps). I think that probably the cooling effect of the water helps keep the bottles from shattering from heat stress.

    This may have cost as much as $20, but it could have been $10.

This coil is putting out the biggest sparks I've ever made with a TC, and during a tuning session the other day, tripped the fire alarm many feet away on the ceiling. I have two thoughts about that:

(1) "What a pain!". (I had to call and tell them it was an accidental trip).
(2) *COOL* !!

While some of the coils from people on this list are constructed beautifully, my experience has been there is cost and time attached to that. You really can build these things on a shoestring. I'll probably experiment with MMC cap arrays when I accumulate more quarters in the spare change can.

    -- thanks,

    Dave