<div dir="ltr">I sort of like your idea about the self-cleaning oven cycle. It would be very even heat, the right temperature, should not hurt the oven. <div><br></div><div>Maybe just wait to do it while the wife is away for an hour or so... :-)</div><div><br></div><div>best,</div><div><br></div><div>doug</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, Aug 8, 2020 at 5:37 AM Pat Horne <<a href="mailto:patintexas@icloud.com">patintexas@icloud.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto">Pay a local shop with an oxy/acetylene rig to heat them? Muffler shop, body shop, A/C contractor? A/C contractor sometimes use air/acetylene. Will that get hot enough?<div><br></div><div>Peace,</div><div>Pat<br><br><div dir="ltr">Pat Horne <div>We support Habitat for Humanity</div><div><br></div></div><div dir="ltr"><br>On Aug 7, 2020, at 11:25 PM, Jack Brooks <<a href="mailto:JIBrooks@live.com" target="_blank">JIBrooks@live.com</a>> wrote:<br><br></div><div dir="ltr">
<div>
<p class="MsoNormal"><span style="font-size:12pt;font-family:"Times New Roman",serif">I have fabricated a number of 1/8 and 3/16<sup>th</sup> inch thick busbars for an Van RV build electrical system which I am assembling in my shop. The busbars are already
bent to shape, but I’d like to anneal them, because the copper was purchased in the “Half-Hard” state and making them “Dead-Soft” will insure that they lay completely flat to maximize the conductivity when I final assemble the system.
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:12pt;font-family:"Times New Roman",serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:12pt;font-family:"Times New Roman",serif">I usually anneal copper by getting it hot enough to glow with a propane torch and then allow it to cool. With the mass of these busbars, I can’t get them up to a temperature
to where they glow with propane. An Oxy/Acetylene torch would work, but I don’t have one. MAPP gas is hotter, but I don’t think it’s a lot hotter.
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:12pt;font-family:"Times New Roman",serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:12pt;font-family:"Times New Roman",serif">I am considering running them through the cleaning cycle in the self-cleaning over, as a self-cleaning oven will typically runs up to around 900°F. Copper needs 700-1,200°F
to anneal, so it should be fine.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:12pt;font-family:"Times New Roman",serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:12pt;font-family:"Times New Roman",serif">I’d prefer almost any other solution. Thoughts? The last time I used our oven for a shop project, it was to cure the paint on the jugs (cylinders) of my ’74 Norton motorcycle.
Mrs. Jack was not happy. Copper bars should be fine as they won’t stink up the house.
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:12pt;font-family:"Times New Roman",serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:12pt;font-family:"Times New Roman",serif">Thanks in advance,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:12pt;font-family:"Times New Roman",serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:12pt;font-family:"Times New Roman",serif">Jack<u></u><u></u></span></p>
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