Why inspecting every light is probably a good idea.

Recently got a 504B silver 5 Mode XM-L which ended up as being the dreaded 3 mode.

Anyway, upon looking under the emitter insulator....

I suspect the surface they applied glue to was oily or otherwise greased so there was no adhesion to speak of. I suspect it would never have lasted that way even at "only" 2,6A that pulls with a fresh 18650. A bit courious tho that the manufacturer went the route with 14mm star diamter. A bit exotic and a whole lot more difficult to center. I would have guessed 16mm are the most popular size along with 20mm stars next.

Wow, man, that's really bad! I wonder how many people, like you, ever thought to check if the thermal paste was actually connected. Perhaps that's how they center the 14mm star so easily. Maybe they have a rig that applies excess glue to the back of the star and centers it into a non-stick jig. Once set it is popped out and goes into a bag of other emitters like it. Guarantees a centered fit when inserting the emitter into the pill. LOL. ;)

I found it casually by curiosity. I wanted to see how the emitter solodering was and how crudely they have (or not) glued it. Instead greeted with a floating emitter. :/

I disassemble every light I get and glue 'em down with Arctic Alumina.

Rich

I use the fujik goop instead. It is ridicolously cheap and does it's job not alot worse than premium stuff if applied correctly (flashlight use). Almost all i had which came with that goop were applied incorrectly. A good esample was the above one, even if the adhesion were there it was way too thick.

I took my Sipik SK-68 apart the other evening to check and the emitter wasn't glued down. I put a bit of Fujik under the emitter; it seemed like a good idea since I had just modded it it to run brighter/longer...