<html><body><span style="font-family:Verdana; color:#000000; font-size:10pt;"><div>Before I oil compensated my 10,000 lumen LED head light, I messed around with epoxy potting. I had two problems. One is the epoxy yellowed over extended time of use as most resins and plastics do. The other is with a LED this powerful, it does give off heat and the epoxy acted as a insulator instead of a conductor. This resulted in the LED starting to burn inside the potting. Two corrections for this would be to experiment with different epoxies and / or not use such a powerful LED array as what I am using. I like my lights bright :)</div>
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<div>Thanks,</div>
<div>Scott Waters </div>
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<DIV id=wmQuoteWrapper>-------- Original Message --------<BR>Subject: [PSUBS-MAILIST] dive report<BR>From: hank pronk via Personal_Submersibles<BR><<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><BR>Date: Thu, July 23, 2015 5:09 am<BR>To: <a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a><BR><BR>Hi all,<BR>I went out to Kootenay Lake and did a dive with Tim and Shelly Novak yesterday. I met an engineer from Ontario, I showed him my killer light and he said "why don't you pot the whole thing instead of oil filling" Hmmm I had no response, he also said they have potted LED's for use in chemical environments. I use a crystal clear casting resin for making electrical penetrators. Might be worth a try.<BR>Hank<BR>_______________________________________________<BR>Personal_Submersibles mailing list<BR><a href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><BR><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><BR></DIV></BLOCKQUOTE></span></body></html>