Copper Tubing

Subject:  Re: Primaries and Copper Tubing
  Date:   Thu, 24 Apr 1997 17:01:00 -0700 (PDT)
  From:   "Edward V. Phillips" <ed-at-alumni.caltech.edu>
    To:   tesla-at-pupman-dot-com

"I do not know what the crit. heat is for copper, but the controlled
cooling is just as important as reaching that temp for ideal annealing."
        Not so in my experience.  Quenching works just as well as slow
cooling, and has the advantage of flaking off the scale.