Re: Tuning Troubles - Brass Balls

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

Original poster: "Terry Fritz" <teslalist-at-qwest-dot-net>

Hi,

I realize that "I" may have gotten the "cheap ones"... but mine were just 
brass coated and burned through:

http://hot-streamer-dot-com/temp/P5260007.jpg

For "real brass balls", just go to:

http://www.mcmaster-dot-com/

And search on "brass ball knobs":

http://www.mcmaster-dot-com/asp/loadpage.asp?pagenum=2007&descid=4798&term=Brass+Ball+Knob

I keep a big selection "on the hoof":

http://hot-streamer-dot-com/temp/P5260002.jpg

"Solid" steel, aluminum, brass, SS303 in sizes from 3/4 to 1 7/8.  They 
come with all kinds of threaded holes to fit your needs too.  The 1 inch 
ones are just over $4.00.

They also have solid unthreaded balls in a vast array of materials 
too...  The 2 inch ball bearings are great of checking calipers at like 
0.000050 inch tolerance...

I have gotten real friendly with McMaster Carr lately.  They have all kinds 
of raw materials that we want ;-)))  MSC (http://www.mscdirect-dot-com/) is 
another great source for all kinds of materials too.

McMaster also has raw magnet wire too at the bottom of page 695:

http://www.mcmaster-dot-com/asp/loadpage.asp?pagenum=695&descid=20337&term=Magnet+Wire

Cheers,

         Terry


At 07:17 PM 5/26/2003 -0700, you wrote:

>Hi Dr,
>
>I've used these, but the thing to watch with the
>brass, and possible the chrome ones is that the
>coating on the outside is very thin and would probably
>burn away quickly.
>
>The brass ones are actually steel on the inside, I
>usually insert them into my drill and sand it all off
>with some high grit paper.
>
>
>--- Tesla list <tesla-at-pupman-dot-com> wrote:
> > Original poster: "Dr. Resonance by way of Terry
> > Fritz <teslalist-at-qwest-dot-net>" <resonance-at-jvlnet-dot-com>
> >
> >
> > For great spark gap balls at a great price, go down
> > to Home Depot in the
> > cabinet section.  Look for the "drawer pulls".
> >
> > Specifically Liberty Hardware p/n P1061C-CHR-C.  It
> > is approx. 1 1/8th inch
> > dia. and has a chrome finish.  Very solid and comes
> > with a mounting mounting
> > bolt.  They also come in same size with brass
> > finish.
> >
> > The great part is these balls are only $2.39 each!!!
> >   You can make a nice 3
> > electrode, 2 gap, sparkgap for under $10!!
> >
> > Dr. Resonance
> >
> > Resonance Research Corporation
> > E11870 Shadylane Rd.
> > Baraboo   WI   53913