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Re: [Shop-talk] Annealing Copper bars

Subject: Re: [Shop-talk] Annealing Copper bars
From: Bob Spidell <>
Date: Sat, 8 Aug 2020 07:58:55 -0700
References: <> <>
User-agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.11.0
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."

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 <> 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 <> 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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