Re: Primaries and Copper

Subject:       Re: Primaries and Copper
       Date:   Sun, 27 Apr 1997 19:41:24 GMT
       From:   robert.michaels-at-online.sme-dot-org (Robert Michaels)
Organization:  Society of Manufacturing Engineers
         To:   tesla-at-pupman-dot-com

        The info below is likely to be correct, but I'm much too
        impatient for such a course of action:  Once the copper
        has reached temperature (and I'd say 500 F. may not be
        enough), plunge it immediately into an ice-water bath.

        The annealing of copper is identical in process to the
        hardening of steel.  If steel is heated and quenched, it
        becomes harder.  If copper is heated and quenched, it becomes
        softer.   Such are the mysteries of metallurgy.

                                  Living a tempered existence in -
                                  Detroit, USA

                                  Robert Michaels

T>Many people are unaware of the fact that copper work-hardens, the
T>more you flex it the stiffer it gets, silver does this too. To make
T>either silver or copper tubing and small gauge wire workable you
T>should anneal (Sp.?) it! This can be easily done in the home oven, set
T>the oven for 400 to 500 degrees F. and put the wire or tubing in and
T>let it heat for about an hour then turn the oven off allow it to cool
T>over night. You will now find the tubing or wire very easy to work.
T>Of course as you work it it will harden again and you can repeat the
T>annealing until the job is done.