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RE: Safety gap electrodes
Hit up a few "mom&pop" computer stores, see if you can get a few dead
computer mice. The mouseball is usually a rubber-coated steel ball. Peel
awat the rubber ceating, drill & tap, and you've got a perfect electrode.
I'm a MIS, so I just "collect" all the dead mice from work and get my saftey
electrodes that way. They are steel, which is a drawback, but they're
almost perfectly round (a few small flat spots usually), and relatively easy
to drill and tap. A good vise and a sharp bit go a long way in making it
easier. I drill and tap mine for 10x32 brass rod, so I can set the gap
easier. The mouse balls that have a steel core are easy to tell, they weigh
a lot, and they don't bounce worth crap. (amazingly little rebound on 'em)
Works for me!
From: Tesla list [mailto:tesla-at-pupman-dot-com]
Sent: Wednesday, November 01, 2000 8:49 AM
Subject: Re: Safety gap electrodes
Original poster: "richard barton" <richardbarton-at-caving5.freeserve.co.uk>
Use "Chinese Finger Balls"- they are perfect for the job, but they are
chromium-plated. They can be welded to studding for fixing.
You can purchase them from many shops that specialise in knick-knacks and
tasteless trash..... there's one in every town.
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
Sent: Tuesday, October 31, 2000 11:43 PM
Subject: Safety gap electrodes
> Original poster: Esondrmn-at-aol-dot-com
> I am working on a new sync rotary gap and want to install a new safety gap
> across the rotary. I plan on setting the gap to approximately .450". I
> used # 10 copper wire for this in the past with 1.0" dia. loops on each
> I would like to use 1.0" to 2.0" round copper or brass electrodes for the
> safety gap. Does anyone know where I can get these? Hopefully somewhere
> that does not require a $25.00 minimum order.
> Thanks, Ed Sonderman