[PSUBS-MAILIST] dive report

[Sean T. Stevenson via Personal_Submersibles]

I wonder if you could pot such a light in two pours? Fill the back end with e.g. MG Chemicals 832TC, and once that cures, cover the emitters with 8322?

Sean


On July 23, 2015 6:57:54 AM MDT, via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>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 :)
>
> 
>
>Thanks,
>
>Scott Waters  
>
> 
>
>-------- Original Message --------
>Subject: [PSUBS-MAILIST] dive report
>From: hank pronk via Personal_Submersibles
><personal_submersibles at psubs.org>
>Date: Thu, July 23, 2015 5:09 am
>To: personal_submersibles at psubs.org
>
>Hi all,
>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.
>Hank
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