Re: Brass Corona Rings

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

Original poster: Yurtle Turtle <yurtle_t-at-yahoo-dot-com> 

Why not simply try to get some soft copper tubing,
then brass plate after cutting and bending to shape.

Adam

--- Tesla list <tesla-at-pupman-dot-com> wrote:
 > Original poster: David Speck <dave-at-davidspeckmd-dot-org>
 >
 >
 > Gerry,
 >
 > Shops that repair lamps and lighting items will
 > stock brass tube in a
 > variety of sizes, though most of what I've
 > encountered is hard drawn
 > brass.  It might be possible to anneal it.  I know
 > you can soften copper by
 > heating it to a red heat and quenching it on water
 > (works the opposite of
 > tempering steel).  I'm not sure the same works for
 > brass, it being an
 > alloy, but a metalworking reference might be able to
 > help you out there.
 >
 > Bending it into a ring without kinking it would be a
 > challenge, though you
 > might be able to fill the tube with a hard wax, bend
 > it around a wood
 > mandrel, and then melt out the wax.  It may also be
 > possible to fill the
 > tube with hard packed sand instead.
 >
 > Just be sure to leave a gap in the ring to keep it
 > from acting as a shorted
 > turn.
 >
 > HTH,
 > Dave
 >
 >
 > >I'm looking to make a corona ring for my big 8x36
 > coil and I think it
 > >would look cool if it were made out of brass.  Is
 > there such a thing as
 > >soft brass tubing like the copper tubing that we
 > use?  I'm thinking 3/4 or
 > >1 inch diameter (minor) and making the ring 11 or
 > 12 inches in diameter
 > >(major).
 > >
 > >Gerry R
 >
 >