Subject: Re: [Shop-talk] Annealing Copper bars

From: Pat Horne <[email-masked]>
Date: Sat, 8 Aug 2020 09:43:55 -0500

Maybe you’re right & I’m wrong! Wouldn’t be the first time. 

Peace,
Pat

Pat Horne 
We support Habitat for Humanity

On Aug 8, 2020, at 9:33 AM, Bob Spidell <[email-masked]> 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 <[email-masked]> 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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From: Bob Spidell <[email-masked]>
Date: Sat, 8 Aug 2020 07:58:55 -0700

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

[email-masked]

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From: John Innis <[email-masked]>
Date: Sat, 8 Aug 2020 10:02:29 -0500

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This matches my understanding as well.  Brass and copper soften when
quenched.  Steel and Aluminum harden when quenched.

On Sat, Aug 8, 2020 at 9:59 AM Bob Spidell <[email-masked]> wrote:

> > Maybe you=E2=80=99re right & I=E2=80=99m wrong! Wouldn=E2=80=99t be the=
 first time.
> > =EF=BB=BFWell snap. I've been doing it wrong all these years I've reuse=
d copper,
> mostly on sealing washers for oil pan plugs.
> >
> > Thanks for the reply.
> > Bob
> >
> >
> >> =EF=BB=BF Question for the List: Is it proper to quench--in water, pre=
sumably,
> or oil maybe--copper to achieve softness after it's been heated 'cherry
> red?'
> >>
> >> Bob
> >>
>
> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/shop-talk/[email-masked]
>
>

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=3D=3D=3D=3D=3D=3D=3D=3D
=3D Never offend people with style when you   =3D
=3D can offend with substance --- Sam Brown  =3D
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<div dir=3D"ltr">This matches my understanding as well.=C2=A0 Brass and cop=
per soften when quenched.=C2=A0 Steel and Aluminum harden when quenched.<br=
></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr"=
>On Sat, Aug 8, 2020 at 9:59 AM Bob Spidell &lt;<a href=3D"mailto:bspidell@=
comcast.net">[email-masked]</a>&gt; wrote:<br></div><blockquote class=
=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rg=
b(204,204,204);padding-left:1ex">Could be (the plot thickens):<br>
<br>
&quot;Annealing copper makes it softer and less brittle, which allows you t=
o <br>
bend it without breaking it. This malleability allows you to hammer and <br=
mold the copper into any shape you wish without cracking the metal. You <br=
can anneal any grade and thickness of copper as long as you have a flame <b=
r>
that can transmit enough heat to the metal. The most straightforward way <b=
r>
to anneal copper is by heating it with an oxygen acetylene torch and <br>
rapidly cooling it in water.&quot;<br>
<br>
<a href=3D"https://www.wikihow.com/Anneal-Copper" rel=3D"noreferrer" target=
=3D"_blank">https://www.wikihow.com/Anneal-Copper</a><br>
<br>
<br>
<br>
On 8/8/2020 7:43 AM, Pat Horne wrote:<br>
&gt; Maybe you=E2=80=99re right &amp; I=E2=80=99m wrong! Wouldn=E2=80=99t b=
e the first time.<br>
&gt;<br>
&gt; Peace,<br>
&gt; Pat<br>
&gt;<br>
&gt; Pat Horne<br>
&gt; We support Habitat for Humanity<br>
&gt;<br>
&gt;<br>
&gt; On Aug 8, 2020, at 9:33 AM, Bob Spidell &lt;<a href=3D"mailto:bspidell=
@comcast.net" target=3D"_blank">[email-masked]</a>&gt; wrote:<br>
&gt;<br>
&gt; =EF=BB=BFWell snap. I&#39;ve been doing it wrong all these years I&#39=
;ve reused copper, mostly on sealing washers for oil pan plugs.<br>
&gt;<br>
&gt; Thanks for the reply.<br>
&gt; Bob<br>
&gt;<br>
&gt;<br>
&gt;&gt; On 8/8/2020 7:21 AM, Pat Horne wrote:<br>
&gt;&gt; I thought quenching made the metal less soft.<br>
&gt;&gt;<br>
&gt;&gt; Annealing requires slow cooling.<br>
&gt;&gt;<br>
&gt;&gt; Peace,<br>
&gt;&gt; Pat<br>
&gt;&gt;<br>
&gt;&gt; Pat Horne<br>
&gt;&gt; We support Habitat for Humanity<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; On Aug 8, 2020, at 9:18 AM, Bob Spidell &lt;<a href=3D"mailto:bspi=
[email-masked]" target=3D"_blank">[email-masked]</a>&gt; wrote:<br>
&gt;&gt;<br>
&gt;&gt; =EF=BB=BF Question for the List: Is it proper to quench--in water,=
 presumably, or oil maybe--copper to achieve softness after it&#39;s been h=
eated &#39;cherry red?&#39;<br>
&gt;&gt;<br>
&gt;&gt; Bob<br>
&gt;&gt;<br>
<br>
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</blockquote></div><br clear=3D"all"><br>-- <br><div dir=3D"ltr" class=3D"g=
mail_signature">=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D<br>=3D Never offend people with =
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