<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div></div><div>Hank,</div><div>it looks like submarines are quietly leading you in to the technological</div><div>age. Be great to see a photo or video when you have the sensors etc</div><div>set up.</div><div>Alan</div><div><br></div><div><br>On 1/09/2019, at 1:35 AM, hank pronk via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br><br></div><blockquote type="cite"><div><div class="yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div dir="ltr" data-setdir="false">Hi All,</div><div dir="ltr" data-setdir="false">Preliminary testing of my annealing oven are good so far. I do not have the controller system in place yet, so I simply feed power to the elements and the circulation fan. I placed identical objects in the oven and hit the power. I found that the parts were different temperatures, but soon realized that was because I do not have a controller method. I then tried a new approach-I hit the power again for for about ten minutes then turned off the elements but left the fan running. After about 15 minutes I tested the parts inside and they wear almost identical in temperature. I also tested the wall temperatures all over the oven and they were also extremely close to each other. I am quite confident that I will have a good even anneal. My engineer friend is also making a temperature tracking system to ensure the anneal is to PVHO spec.</div><div dir="ltr" data-setdir="false">Hank</div></div></div></blockquote><blockquote type="cite"><div><span>_______________________________________________</span><br><span>Personal_Submersibles mailing list</span><br><span><a href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a></span><br><span><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a></span><br></div></blockquote></body></html>