<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>Jon can you resend the link to the compass video. Somehow it did not come through. </div><div id="AppleMailSignature"><br></div><div id="AppleMailSignature">Cliff<br><br>Sent from my iPad</div><div><br>On Jun 13, 2019, at 1:47 PM, Alan via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br><br></div><blockquote type="cite"><div><meta http-equiv="content-type" content="text/html; charset=utf-8"><div></div><div>Hank,</div><div>that's good to hear you have had success.</div><div>If you strip a section of the wire in the epoxy and use pins as you do</div><div>you have a better chance. This is what we have done in the past.</div><div>In Doug's SV Seeker video on pressure testing penetrators, he has a big</div><div>failure rate & he is using pins in the potted section.</div><div>I am now coating my epoxy, part of my fitting & an inch up my wires</div><div>with my PVC glue as a flexible adhesive barrier, then molding polyeurathane</div><div>over that.</div><div>Alan</div><div><br></div><div><br></div><div><br></div><div> </div><div><br>On 14/06/2019, at 1:27 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="ydpf9e6378fyahoo-style-wrap" style="font-family: Helvetica Neue, Helvetica, Arial, sans-serif; font-size: 13px;"><div></div>
<div>Alan,</div><div>I have had good luck with epoxy for potting penetrators in metal fittings. I have pressure tested well past 1,000 psi with good success. Gamma and E3000 both have 20 pin penetrators using casting resin and were pressure tested above 1,000 psi. </div><div>Having said that, I potted my new compass sensor with epoxy and the sensor has failed possibly. I have not investigated completely yet. </div><div>I would have concerns now about potting electronics in epoxy. this is my first time potting electronics, I would recommend buying electronic specific potting material and keep using casting resin or epoxy for power penetrators.</div><div>Hank</div><div><br></div>
</div><div id="yahoo_quoted_0618114580" class="yahoo_quoted">
<div style="font-family:'Helvetica Neue', Helvetica, Arial, sans-serif;font-size:13px;color:#26282a;">
<div>
On Thursday, June 13, 2019, 6:20:21 AM MDT, Alan via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:
</div>
<div><br></div>
<div><br></div>
<div><div dir="ltr">Jon,<br></div><div dir="ltr">that was one of the most comprehensive "How to" videos I've seen.<br></div><div dir="ltr">Have one of those compasses so will emulate that.<br></div><div dir="ltr">I have reservations about epoxy sealing the wires though.<br></div><div dir="ltr">I did a lot of experiments with glues & PVC wire jackets & found a lot of<br></div><div dir="ltr">the glues disappointing. I found one product specifically for PVC boats<br></div><div dir="ltr">that stood out.<br></div><div dir="ltr">I have mentioned before that I potted a couple of wires for 1" in to a WD40<br></div><div dir="ltr">filled housing & the WD40 just ran out between the epoxy & wire jacket<br></div><div dir="ltr">without pressure. <br></div><div dir="ltr">Under pressure I would guess that the PVC jacket would be more compressible<br></div><div dir="ltr">than the epoxy resin around it & would tear away from it, letting water in.<br></div><div dir="ltr">Suggest epoxying the whole board both sides & the wires where they are <br></div><div dir="ltr">soldered on, in case of water egress.<br></div><div dir="ltr">I have strong reservations about the epoxy sticking to the PVC pipe also.<br></div><div dir="ltr">I would be interested in others opinions on this as potting wires is <br></div><div dir="ltr">something we are doing a lot of.<br></div><div dir="ltr">Alan<br></div><div dir="ltr"><br></div><div dir="ltr">_______________________________________________<br></div><div dir="ltr">Personal_Submersibles mailing list<br></div><div dir="ltr"><a ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br></div><div dir="ltr"><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br></div></div>
</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></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>