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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#002060">John,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#002060"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#002060">Agreed. I built a PID Controller setup for my smoker using a Inkjet 106-RL. It’s a great way to go. Now I just need to find a kiln. I can provide some
good info if you are still working on it. <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#002060"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#002060">Yes, aware of issues opening a 900°F oven.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#002060"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#002060">Jack<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#002060"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b>From:</b> John Innis <jdinnis@gmail.com> <br>
<b>Sent:</b> Saturday, August 8, 2020 10:57 AM<br>
<b>To:</b> Jack Brooks <JIBrooks@live.com><br>
<b>Cc:</b> shop-talk <shop-talk@autox.team.net><br>
<b>Subject:</b> Re: [Shop-talk] Annealing Copper bars<o:p></o:p></p>
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<p class="MsoNormal">Another option for you, find someone that has a kiln. I have an old electric kiln that I got for free because it was old. I added a simple thermocouple temperature gauge to it and it works great for annealing and heat treating small parts.
My next project is actually adding solid-state relays and a PID controller so I can do some more precise temperature control. If you do this, or use a modified oven, do be careful. There is a reason that oven doors lock at high temperatures.
<o:p></o:p></p>
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<p class="MsoNormal">On Sat, Aug 8, 2020 at 11:12 AM Jack Brooks <<a href="mailto:JIBrooks@live.com">JIBrooks@live.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#002060">I agree, but I’m not sure at what temperature the oven will release the latch and I’m not modifying
the latch on a new Inductive range. <grin> Thought about it on the old over for making high temperature 900°F pizza, but that was the old oven…………</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#002060"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#002060">The path forward using the oven is probably going to be the first step. If it gets me at or close
to what I need, I will be done. If not, I will get with my body guy and see if I can use his Oxy torch.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#002060"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#002060">Thanks everyone,</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#002060">Jack</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b>From:</b> Shop-talk <<a href="mailto:shop-talk-bounces@autox.team.net" target="_blank">shop-talk-bounces@autox.team.net</a>>
<b>On Behalf Of </b>John Innis<br>
<b>Sent:</b> Saturday, August 8, 2020 8:58 AM<br>
<b>To:</b> Pat Horne <<a href="mailto:patintexas@icloud.com" target="_blank">patintexas@icloud.com</a>><br>
<b>Cc:</b> shop-talk <<a href="mailto:shop-talk@autox.team.net" target="_blank">shop-talk@autox.team.net</a>><br>
<b>Subject:</b> Re: [Shop-talk] Annealing Copper bars<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">The oven would work fine, you just need to add a quench as soon as possible when you come out.
<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">On Sat, Aug 8, 2020 at 10:43 AM Pat Horne <<a href="mailto:patintexas@icloud.com" target="_blank">patintexas@icloud.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">So, referring back to the OP about using the oven to anneal the bars, it WOULDN’T be a good choice. <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Peace,<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt">Pat<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Pat Horne <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">We support Habitat for Humanity<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt"><br>
On Aug 8, 2020, at 10:03 AM, John Innis <<a href="mailto:jdinnis@gmail.com" target="_blank">jdinnis@gmail.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">This matches my understanding as well. Brass and copper soften when quenched. Steel and Aluminum harden when quenched.<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">On Sat, Aug 8, 2020 at 9:59 AM Bob Spidell <<a href="mailto:bspidell@comcast.net" target="_blank">bspidell@comcast.net</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt">Could be (the plot thickens):<br>
<br>
"Annealing copper makes it softer and less brittle, which allows you to <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 <br>
that can transmit enough heat to the metal. The most straightforward way <br>
to anneal copper is by heating it with an oxygen acetylene torch and <br>
rapidly cooling it in water."<br>
<br>
<a href="https://www.wikihow.com/Anneal-Copper" target="_blank">https://www.wikihow.com/Anneal-Copper</a><br>
<br>
<br>
<br>
On 8/8/2020 7:43 AM, Pat Horne wrote:<br>
> Maybe you’re right & I’m wrong! Wouldn’t be the first time.<br>
><br>
> Peace,<br>
> Pat<br>
><br>
> Pat Horne<br>
> We support Habitat for Humanity<br>
><br>
><br>
> On Aug 8, 2020, at 9:33 AM, Bob Spidell <<a href="mailto:bspidell@comcast.net" target="_blank">bspidell@comcast.net</a>> wrote:<br>
><br>
> Well snap. I've been doing it wrong all these years I've reused copper, mostly on sealing washers for oil pan plugs.<br>
><br>
> Thanks for the reply.<br>
> Bob<br>
><br>
><br>
>> On 8/8/2020 7:21 AM, Pat Horne wrote:<br>
>> I thought quenching made the metal less soft.<br>
>><br>
>> Annealing requires slow cooling.<br>
>><br>
>> Peace,<br>
>> Pat<br>
>><br>
>> Pat Horne<br>
>> We support Habitat for Humanity<br>
>><br>
>><br>
>> On Aug 8, 2020, at 9:18 AM, Bob Spidell <<a href="mailto:bspidell@comcast.net" target="_blank">bspidell@comcast.net</a>> wrote:<br>
>><br>
>> 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?'<br>
>><br>
>> Bob<br>
>><br>
<br>
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