I reckon they used these and they are 18mm OD.
https://www.fasttech.com/products/0/10001999/1250000-copper-17mm-to-17mm-ring
I could check tomorrow if you like.
Driver size on stock brass pil is 17.9mm.
I ordered three extra pills they came with retaining rings. I took a dremal to the wire holes they were a little sharp. Iam waiting for drivers and Led’s from mountain electronics.
Mike C,
There is no need for retaining ring when it can be easily soldered to pill… Totally unnecessary part.
Well it is necessary in their design… :
Thanks for the info all. My hosts have arrived with DHL, but I won’t be able to pick them up until I’m home again on Friday.
I won’t need the ring or need to solder. I just need to change the diameter of my drivers if they are too small. I like to press fit drivers rather than solder, makes replacing them in the future much easier.
Please report when you’ll have time…
I got my hosts now… I made a dedicated thread instead of posting in this thread: Build/Mod: Zoomie with Brynite B158B host (wider flood mod)
Subscribed, some interesting ideas forming in my head… :smiling_imp:
I see a lot of people use this light with dedomed XP-G2, but does someone try to use this lamp and dedome a original LED ( U4 ) in it ?
If yes how it operate relative to original LED with dome ?
I’ve tried it that way, but didn’t leave it. The LED that comes in it (an XM-L2) tightens up and warms up nicely when dedomed. But ultimately, the XP-G2 has a smaller surface area, so it’s beam is even tighter (when also dedomed). I don’t have pictures of the B158 with the dedomed XM-L2, but these pics with a few UF-1504’s (and a B158) side-by-side should provide a nice comparison.
A side note… the original LED comes on an aluminum PCB. If you’re going to drive it harder (say, with a FET driver), you want a copper DTP board. But if you leave the original driver, the aluminum board is fine.
No, I just asking about dedome a led, nothing else I don’t want to experiment for now.
I have HI V3 and U4 version and I like more HI V3 because beam is narrowed and it can reach more distance.
Hmm it is strange, so if I understand well you only dedome a led and do nothing more, and lamp warms up more than before you dedome it ?
Yes, dedoming alters the tint.
warm meaning a warmer tint , not hotter temperature …
cool white neutral white warm white
I don’t think so, he never mentioned colour temperature of the led.
As far as I understand lamp is warmer when led is dedomed.
Haha… It’s like the others said. Color temperature is affected by dedoming. Doing so has no affect on the actual temperature (heat)
OMG :person_facepalming:
I read some posts where people dedome a led, and I have never read that flashlight was hotter after that so I found it strange when you say that, but obviously I did not understand well.
It is not important to me if colour temperature changes, only thing that I want to know is a beam of the light narrowed and can it gain more throw ?
With U4 when full zoom there is nothing but clear hotspot ( square ), and with HI V3 there is a ring around hotspot ( square ). Is this also a case when you dedome a U4 do you remember ?
:person_facepalming: :cry:
Why are you crying? If you are white wall hunter just buy reflector light and enjoy on a nice wall beam pattern.
Aspheric beam mostly has those ringy imperfections around die. They can be eliminated… If you want pure square beam than use black oven paint or similar and apply lightly and precise.
I even enhance reflection around sqare (flood) in my builds and while it ain’t look nice on a wall I really don’t care for that. I really care how it throws at nigth an if I can get usable flood out of it.
There are even reflector - aspheric flashlight combinations out there with even more ringy beam like this:
This from your picture looks awesome :sunglasses:
I cry because that pic is result of ‘’dedoming’’ a led, if it can be called dedome, because I screwed up.
Original led was clear and without anything just pure little square, also a fabric V3 HI is clean and pure, and then look at my result 
There is visible some marks like + and dot also too many residues from the dome, it look pretty ugly. When I watched on YT about dedoming it was easy and fast, but in my case not at all.
Those are just common reflections. The dome blocks those reflections. After dodo mint it is normal. Your dedome doesn’t look bad at all shining on the wall.