- 1. annealing copper washers (score: 1)
- Author: Unknown
- Date: Sun, 25 May 2003 18:46:38 -0400
- Heat the copper until it's red, and let it cool without "quenching" in liquid. Slow cooling softens the copper. Cooling it fast (usually in water) "tempers" it- rehardening the metal- not what you w
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