I think this is what you’re looking for. That’s the best finning I’ve seen for a light of that size and it’s actually done in copper.
Dont forget our own member’s creation, C8TT:
That C8TT is nice too. I have it and it looks better in person.
Wow!! What is this treasure called? Where is it for sale?
Yea but it was an Oveready product originally. They was just someone reselling their product.
Ha. Thats perty. Lot of work went into making that i’d guess. Practically speaking yes. Aesthetically, it is a little blingy—too many angles and jags milled into the fins. Looks like the fins are a mm or so thick with about 3-4mm spaced apart, sacrificing alot of mass that way, seems the trade off is more air flow to each individual fin. I liked the trj20 spacing and more conservative look (edit: but like dale has mentioned —pointless having all those precious fins without the insides being right.) But i guess if you want copper for heat you really gotta show it off cause its gonna cost. I dont know that it will fit with their toned down look. I’d want to frame it and hang it on a wall somewhere. Is this in your collection or did you find a pic? It sure does seem to fit the bill—with the deeper fins, though. Kind of looks like they belly a bit in the middle i’d guess top+bottom ~3/32-1/8” up to 7/32-1/4” deep at the belly? That’d be awesome.
Pretty little light. Looks like jewelry. Most of my lights are used in the field so i dont really want to carry something that pretty —i’d be afraid to use it.
Copper damages easily, those fins would not look pretty after a gouple of drops ftom real-world use!
I like the design, any renderings how the front looks with 7 LEDs? Otherwise great idea, I would consider it.
BTW, aside from lung cancer and price is there a reason there are no flashlights made from conductivity-optimized beryllium copper alloys? They seem much superior to regulars ones and I would expect that some would take the cost and do the precautions and actually use it.
Final prototype is done
10mm emitter shelf , deepest fin is 6mm . With 30T 21700 installed it is almost close to the brightness of ROT66
Woah. 10mm shelf.
That is absolutely massive About as thick as that Enogear XHP70.2 light with a 26650.
Weight?
Looking at how massive it looks and that thick shelf, we are probably looking at 130+ grams of pure awesomeness.
Edit: Not a copper shelf. Was wrong, sorry.
Weight without battery is 135gram , the head part weighs 90gram
135g? Not bad. Wouldn’t called that lightweight, but it’s not bad. 
The thought of 300g has really scared me for a moment.
massive fins yes , thick shelf yes , 300+gram no way, E07 is a small-size EDC 
It looks massive, our engineer has a relatively small palm. the pure weight is only 135grams
Yeah sorry.
My calculation was completely off.
BTW a copper variant would be interesting as well. Not for EDC, not for backpacking but there would be uses as well.