Could be (the plot thickens):
"Annealing copper makes it softer and less brittle, which allows you to
bend it without breaking it. This malleability allows you to hammer and
mold the copper into any shape you wish without cracking the metal. You
can anneal any grade and thickness of copper as long as you have a flame
that can transmit enough heat to the metal. The most straightforward way
to anneal copper is by heating it with an oxygen acetylene torch and
rapidly cooling it in water."
https://www.wikihow.com/Anneal-Copper
On 8/8/2020 7:43 AM, Pat Horne wrote:
> Maybe youâ??re right & Iâ??m wrong! Wouldnâ??t be the first time.
>
> Peace,
> Pat
>
> Pat Horne
> We support Habitat for Humanity
>
>
> On Aug 8, 2020, at 9:33 AM, Bob Spidell <bspidell@comcast.net> wrote:
>
> Well snap. I've been doing it wrong all these years I've reused copper,
> mostly on sealing washers for oil pan plugs.
>
> Thanks for the reply.
> Bob
>
>
>> On 8/8/2020 7:21 AM, Pat Horne wrote:
>> I thought quenching made the metal less soft.
>>
>> Annealing requires slow cooling.
>>
>> Peace,
>> Pat
>>
>> Pat Horne
>> We support Habitat for Humanity
>>
>>
>> On Aug 8, 2020, at 9:18 AM, Bob Spidell <bspidell@comcast.net> wrote:
>>
>>  Question for the List: Is it proper to quench--in water, presumably, or
>> oil maybe--copper to achieve softness after it's been heated 'cherry red?'
>>
>> Bob
>>
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