<html xmlns="http://www.w3.org/1999/xhtml" xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office"><head><!--[if gte mso 9]><xml><o:OfficeDocumentSettings><o:AllowPNG/><o:PixelsPerInch>96</o:PixelsPerInch></o:OfficeDocumentSettings></xml><![endif]--></head><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_ym19_1_1489359536287_2685"><span>Brian,</span></div><div id="yui_3_16_0_ym19_1_1489359536287_2684"><span id="yui_3_16_0_ym19_1_1489359536287_2683">before you do your electrical through hulls, have a look at this video of Doug's</span></div><div id="yui_3_16_0_ym19_1_1489359536287_2692" dir="ltr"><span id="yui_3_16_0_ym19_1_1489359536287_2694">if you haven't already. He had lots of failures, with leaks, & pins extruding out of</span></div><div id="yui_3_16_0_ym19_1_1489359536287_2758" dir="ltr"><span id="yui_3_16_0_ym19_1_1489359536287_2757">the epoxy. The solution in the end was to rough up the pins first before epoxying</span></div><div id="yui_3_16_0_ym19_1_1489359536287_2814" dir="ltr"><span>& coating with 3M 5200.</span></div><div id="yui_3_16_0_ym19_1_1489359536287_2815" dir="ltr"><span>Alan</span></div><div id="yui_3_16_0_ym19_1_1489359536287_2693" dir="ltr"><span id="yui_3_16_0_ym19_1_1489359536287_2709"><a class="enhancr2_ebb18056-635f-dec6-d0d0-a547ac8d4459" id="yui_3_16_0_ym19_1_1489359536287_2708" href="https://www.youtube.com/watch?v=UDZQIDkWs4w">ROV Hull Components - Part 3 - Through Hull Electrical Connectors</a></span></div><div id="yui_3_16_0_ym19_1_1489359536287_2714" dir="ltr"><span><br></span></div><div id="yui_3_16_0_ym19_1_1489359536287_2715"><br></div><div class="yahoo-link-enhancr-card ymail-preserve-class ymail-preserve-style img-overlay-selected" id="enhancr2_ebb18056-635f-dec6-d0d0-a547ac8d4459" style='font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; max-width: 400px;' dir="ltr" contenteditable="false" data-size="medium" data-type="yenhancr" data-embed-url="https://www.youtube.com/embed/UDZQIDkWs4w?feature=oembed&autoplay=1&showinfo=0&modestbranding=1&enablejsapi=1" data-category="video" data-url="https://www.youtube.com/watch?v=UDZQIDkWs4w"> <a class="yahoo-enhancr-cardlink" id="yui_3_16_0_ym19_1_1489359536287_2732" style="color: rgb(0, 0, 0) !important; 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z-index: 2; max-width: 380px;" border="0" cellspacing="0" cellpadding="0"> <tbody id="yui_3_16_0_ym19_1_1489359536287_2824"><tr id="yui_3_16_0_ym19_1_1489359536287_2823"> <td style="padding: 16px 0px 16px 12px; vertical-align: top; background-color: rgb(255, 255, 255);"> <img height="32" class="card-object-1 yahoo-ignore-inline-image ymail-preserve-class" style="border: 1px solid rgb(224, 228, 233); border-image: none; margin-top: 3px; min-width: 32px;" src="https://s.yimg.com/nq/storm/assets/enhancrV2/23/logos/youtube.png" data-id="b948c0df-c623-1938-b7e3-a4895223536c"> </td> <td id="yui_3_16_0_ym19_1_1489359536287_2829" style="padding: 16px 12px; width: 99%; vertical-align: middle;"> <h2 class="card-title" style='margin: 0px 0px 4px; line-height: 19px; font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px;'>ROV Hull Components - Part 3 - Through Hull Electrical Connectors</h2> <div class="card-description" id="yui_3_16_0_ym19_1_1489359536287_2828" style="color: rgb(153, 153, 153); line-height: 15px; font-size: 11px;">Starting to make some progress on our DIY high pressure through hull connectors, but this is an area that needs ...</div> </td> <td id="yui_3_16_0_ym19_1_1489359536287_2822" style="padding: 16px 12px 16px 0px; text-align: right;"> </td> </tr> </tbody></table> </td> </tr> </tbody></table> </td> </tr> </tbody></table> </a></div><div id="yui_3_16_0_ym19_1_1489359536287_2785"><br></div><div id="yui_3_16_0_ym19_1_1489359536287_2682"><span><br></span></div><div class="qtdSeparateBR" id="yui_3_16_0_ym19_1_1489359536287_2591"><br><br></div><div class="yahoo_quoted" id="yui_3_16_0_ym19_1_1489359536287_2595" style="display: block;"> <div id="yui_3_16_0_ym19_1_1489359536287_2594" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div id="yui_3_16_0_ym19_1_1489359536287_2593" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div id="yui_3_16_0_ym19_1_1489359536287_2592" dir="ltr"> <font id="yui_3_16_0_ym19_1_1489359536287_2596" face="Arial" size="2"> <hr size="1" id="yui_3_16_0_ym19_1_1489359536287_2701"> <b><span style="font-weight: bold;">From:</span></b> Brian Cox via Personal_Submersibles <personal_submersibles@psubs.org><br> <b><span style="font-weight: bold;">To:</span></b> Personal Submersibles General Discussion <personal_submersibles@psubs.org> <br> <b><span style="font-weight: bold;">Sent:</span></b> Saturday, March 11, 2017 4:06 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] potting epoxy<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_ym19_1_1489359536287_2650"><br><div id="yiv2066015463"><div id="yui_3_16_0_ym19_1_1489359536287_2649"><div id="yui_3_16_0_ym19_1_1489359536287_2648" style="font-family: Arial, sans-serif; font-size: 10pt;"><div>Alan, you might be able to use some of that high temp epoxy for the high temp area of your lights.</div><div id="yui_3_16_0_ym19_1_1489359536287_2669"> </div><div id="yui_3_16_0_ym19_1_1489359536287_2670">Brian</div><div id="yui_3_16_0_ym19_1_1489359536287_2647"><br clear="none"><br clear="none">--- personal_submersibles@psubs.org wrote:<br clear="none"><br clear="none">From: Alan via Personal_Submersibles <personal_submersibles@psubs.org><br clear="none">To: Personal Submersibles General Discussion <personal_submersibles@psubs.org><br clear="none">Subject: Re: [PSUBS-MAILIST] potting epoxy<br clear="none">Date: Sat, 11 Mar 2017 14:30:40 +1300<br clear="none"><br clear="none"></div><div>Brian,</div><div>just had a look at the link to the potting epoxy.</div><div>Make sure you buy the SS (slow setting) version for larger volume casts.</div><div>The other versions seem designed for pouring over wiring & I can't see any</div><div>reference as to how thick you can pour it. </div><div>Most of that sort of stuff can crack if you pour it too thick & cure it too fast.</div><div>I used to use resins in art work & have had a number of thick sectioned </div><div>pours crack.</div><div>If you have already bought the other product; you could use it by doing an</div><div>initial pour or brush on, around the wires or pins & when dry, fill in with the</div><div>SS stuff.</div><div>Cheers Alan <br clear="none"><br clear="none">Sent from my iPad</div><div class="yiv2066015463yqt0502189637" id="yiv2066015463yqt59207"><div><br clear="none">On 10/03/2017, at 6:48 PM, Brian Cox via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br clear="none"><br clear="none"></div><blockquote><div><div style="font-family: Arial, sans-serif; font-size: 10pt;"><div>Hi All, </div><div> I got some potting epoxy from McMaster Carr, problem is, it's not really the best solution for our needs since it is actually a flexible epoxy, it would most likely extrude under pressure. Luckily in the package with the epoxy that I got, they sent me a lot of info and a catalogue showing all their epoxy products. They have some amazing epoxies ! Ceramic, machine-able epoxy, and the perfect epoxy for what I need, which is: potting for my electrical penetrators. This stuff (Duralco 4461 IP) is really great because it's very pourable and it has a heat tolerance of 500 F , that means I can safely solder my #4 stranded copper wire within a close proximity to the potted copper rods ! It's also ideal for electrical resistance. And low shrinkage . </div><div> </div><div>Here's a link to the 4461 IP :</div><div> </div><div><a href="http://www.cotronics.com/vo/cotr/ea_electricalresistant.htm" target="_blank" rel="nofollow" shape="rect">http://www.cotronics.com/vo/cotr/ea_electricalresistant.htm</a></div><div> </div><div>Brian</div><div> </div></div></div></blockquote></div><blockquote><div><span>_______________________________________________</span><br clear="none"><span>Personal_Submersibles mailing list</span><br clear="none"><span><a href="mailto:Personal_Submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a></span><br clear="none"><span><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank" rel="nofollow" shape="rect">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a></span><br clear="none"></div></blockquote>_______________________________________________
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