Re: Copper toroid

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

Original poster: "Harold Weiss" <hweiss-at-new.rr-dot-com> 


Hi All,

I have found that the better you polish copper, (or any metal) the longer it
takes to tarnish/corrode.  The 4" flat primary that I built in 95 is just
starting to cloud up.  That one was taken to a mirror finish before I wound
it.

David E Weiss

 > Original poster: "Hydrogen18" <hydrogen18-at-hydrogen18-dot-com>
 >
 > I've seen steel wool to cause plastic to rust. A simple wipe down may do
it,
 > but will probaly inadvertently deposit body oils on it causing rather
quick
 > corrosion to the copper.
 >
 > ---Eric
 > ----- Original Message -----
 > From: "Tesla list" <tesla-at-pupman-dot-com>
 > To: <tesla-at-pupman-dot-com>
 > Sent: Friday, May 14, 2004 1:38 PM
 > Subject: Re: Copper toroid
 >
 >
 >  > Original poster: "Richard Modistach" <hambone-at-dodo-dot-com.au>
 >  >
 >  >
 >  > <<i've been a plumber for twenty five years and i do not care what you
do
 > to
 >  >  > copper it will not rust >>
 >  >
 >  > i agree 100%
 >  > rust is a specific term given to
 >  > ferric compounds but is simply a type of
 >  > metallic oxidation\corrosion.
 >  > surface copper corrosion occurrs over time
 >  > after polishing with steel wool, a wipe down
 >  > to get rid of any wool 'micro' particles left on
 >  > the copper that may rust solves any problems,
 >  > steel wool causing copper to rust is an old wives tale.
 >  > i've also been buffing all types of stainless steel
 >  > with mild steel wire brushes for as long as i can
 >  > remember and never had any rust occurr, surface
 >  > or otherwise.
 >  > having said that, steel wool is a poor choice for
 >  > polishing, a chemical and mechanical cutting
 >  > compound like brasso in aus. (*god only knows
 >  > what it's called in the u.s.)or a straight chemical
 >  > cutting compound like tarnoff (* see above) is
 >  > far better, the brasso(* see above) needs elbow
 >  > grease and will do wonders for aluminium too.
 >  > tarnoff can be wiped on and wiped dry.
 >  > i'll be using a 6\18" exhaust donut as the toroid
 >  > copper plated  and polished to a mirror finish.
 >  > my primary and strike ring will be the same.
 >  > rubbing with steel wool will remove the polish and
 >  > take it back to a satin finish. tarnoff will do the same.
 >  > only brasso and elbow grease or a buffing wheel
 >  > will mirror it.
 >  >
 >  > regards
 >  > richard
 >  > aus
 >  >
 >  >
 >  >
 >  >
 >  > ----- Original Message -----
 >  > From: "Tesla list" <tesla-at-pupman-dot-com>
 >  > To: <tesla-at-pupman-dot-com>
 >  > Sent: Friday, May 14, 2004 7:52 AM
 >  > Subject: Re: Copper toroid
 >  >
 >  >
 >  >  > Original poster: "bill wilson" <wtw-at-tampabay.rr-dot-com>
 >  >  >
 >  >  > i've been a plumber for twenty five years and i do not care what you
do
 > to
 >  >  > copper it will not rust
 >  >  > ----- Original Message -----
 >  >  > From: "Tesla list" <tesla-at-pupman-dot-com>
 >  >  > To: <tesla-at-pupman-dot-com>
 >  >  > Sent: Wednesday, May 12, 2004 11:59 PM
 >  >  > Subject: Re: Copper toroid
 >  >  >
 >  >  >
 >  >  >  > Original poster: "Hydrogen18" <hydrogen18-at-hydrogen18-dot-com>
 >  >  >  >
 >  >  >  > Do not steel wool copper unless u plan to solder the surface. IT
 > WILL
 >  >  > RUST!
 >  >  >  >
 >  >  >  > ---Eric
 >  >  >  >
 >  >  >  > ----- Original Message -----
 >  >  >  > From: "Tesla list" <tesla-at-pupman-dot-com>
 >  >  >  > To: <tesla-at-pupman-dot-com>
 >  >  >  > Sent: Wednesday, May 12, 2004 4:06 PM
 >  >  >  > Subject: Re: Copper toroid
 >  >  >  >
 >  >  >  >
 >  >  >  >  > Original poster: robert & june heidlebaugh
 >  >  > <rheidlebaugh-at-desertgate-dot-com>
 >  >  >  >  >
 >  >  >  >  > Copper works very well.  Copper costs. it anneals easy ,
polishes
 >  > with
 >  >  >  > steel
 >  >  >  >  > wool and holds its color when laquered.. and solders well. It
can
 > be
 >  >  >  > turned
 >  >  >  >  > on a lathe, pressed or hammered into shape. Anything Al can do
Cu
 > is
 >  >  >  > better.
 >  >  >  >  >     Robert   H
 >  >  >  >  > --
 >  >  >  >  >
 >  >  >  >  >
 >  >  >  >  >  > From: "Tesla list" <tesla-at-pupman-dot-com>
 >  >  >  >  >  > Date: Tue, 11 May 2004 07:15:54 -0600
 >  >  >  >  >  > To: tesla-at-pupman-dot-com
 >  >  >  >  >  > Subject: Copper toroid
 >  >  >  >  >  > Resent-From: tesla-at-pupman-dot-com
 >  >  >  >  >  > Resent-Date: Tue, 11 May 2004 07:29:12 -0600
 >  >  >  >  >  >
 >  >  >  >  >  > Original poster: Cody Carse <cac619-at-earthlink-dot-net>
 >  >  >  >  >  >
 >  >  >  >  >  > Does anyone forsee any problems with using copper as the
 > material
 >  >  > for
 >  >  >  > my
 >  >  >  >  >  > toroid. I found some thin copper sheets in my garage I
would
 > like
 >  > to
 >  >  >  > make a
 >  >  >  >  >  > toroid out of. I have never seen it used but maybe that's
just
 >  >  > because
 >  >  >  > Al
 >  >  >  >  >  > is cheaper. Thanks
 >  >  >  >  >  >
 >  >  >  >  >  > Cody
 >  >  >  >  >  >
 >  >  >  >  >  >
 >  >  >  >  >
 >  >  >  >
 >  >  >  >
 >  >  >  >
 >  >  >
 >  >  >
 >