The discussion has turned to if potting is helpful in small lights. ReManG did a drop test in his review of the Manker Boney, after some 20 drops from 5 feet to a concrete floor, the light failed. REVIEW: Manker Nichia AAA Keychain light aka "Boney" PIC HEAVY - #14 by ReManG
That failure was the perfect chance for him to open the pill to investigate the problem. In this thread, in the 5th picture down he found a wire had broken from the board. Cracking open a Manker Boney LED pill 7+ DAYS on 1 fresh alkaline/Component pics/ Mhanlen verified 7 day run time@ 1 Lumen +/- His thought was the wire was the heaviest driver componenent on the board causing it to break off.
On these small lights with no lens the LED is exposed to the elements, my fenix EO1 worst torture test for it is, the potting may help with waterpoofing becausr it has suvived 3 trips through our clothes washer.
Also I want to say thanks djozz for your effort in making this closer to being a finished product.