Simple mod: Modded an old early-model grey Emisar D4.
I was hoping to replace the stock SST-20 high CRI with ones of better tint, but turns out I don’t have any with better tint that aren’t already sitting in an FW3A.
Today (when I shouldn’t have been toying with lights)…
Rebuilt my ET G25C2 from a direct drive single mode dedomed XM-L2 making 66kcd >> Convoy 5A driver w/ Bistro and a J5 4000k SST20w from Mouser under a LEDIL IRIS 12077 making 45kcd. I really like it now. The goal for this light was a “foul-weather-pocket-thrower”. Minimal spill and NW/WW. So far, I think I’ve accomplished my goal. Other CCTs will be tried, but this 4k is looking good under the TIR at ~5A.
Retuned the reflector focus/ centering ring in my Convoy M2 running the 5A/Bistro driver and a 1mm White Flat. Got it mostly centered and mostly artifact free. I’ll perfect it some other day but it’s 95% right now. Getting 79kcd at 4.62A. This was a PITA getting this setup tuned in. The M2 reflector/host interface/shelf doesn’t allow it to sit deep enough to focus the WF1. After filing the reflector, I managed to maximize throw, but halos and crescents were everywhere. Then I needed to add an additional o-ring between the glass and the bezel since the stackup height changed….
The 3030 gaskets available today seem to cause a strong halo artifact in the lights that I’ve used them in. I ended up gluing an XP ring in instead, as that yielded a mostly clean beam. I plan on pulling it out and painting it flat black when I get bored again.
18350?
Did you remove the signal spring? What driver are you using?
Yes, you can see a piece of copper that carries the signal. I guess this is what enables 18350 support.
The picture is a link 
Sorry, didn’t notice if the pic is link.
Thanks CRX & Agro 
There have been a few threads pop up lately regarding collars and RLT. Since I’ve been locked down in the house I thought I’d experiment a little with a UF-1504. So, this whole project probably took no longer than 20 minutes. Sanded both ends of a Maglight AA Mini reflector as it was the smallest reflector I was willing to destroy. Obviously not spherical, but it looked pretty close. I didn’t bother smoothing out the sandmarks as you can see. Put a coat of flat black paint on the outside.
I did no tuning or calibrating or anything like that. Just sanded it and guessed it looked about right. Light has a dedomed XPG. Took readings at 10 meters with an HS1010.
Without collar: 308 kcd
With collar: 384 kcd
I swear this light used to put out about 400 kcd when I built it 5 or so years ago. I probably haven’t touched it in as long. I was thinking of replacing the led sometime in the near future. Anyway, I’d say score with the Maglight Mini reflector. Once you Dremel off the outer edge it fits nicely in the 1504 pill.
Nice. 
Nice mod Willy
any artifact rings around the hot spot?
Nice bump! Maybe elevating it a bit will get better results, but still a cheap bump.
Thanks. It’s not ringy at all after I painted everything black. There is one very faint large outer ring, but I’m not sure it it’s possible to eliminate it. I did notice the led seems more defined on a wall shot with the collar. I can even see the outline of the square pad.
I will try moving the collar up a bit and taking more readings. This light is reading very low for some reason. Maybe because it has sat for so long. I think I’ll try sanding the solder blobs on the ends of the springs first.
Cleaning the lens and all electrical contact points could really make a difference. Once you have it all tuned-up I’d love to see you repeat your w w/o collar readings. What cell and driver are you using?
I got a SBT90.2 in a 1504 pill - it does 500+ kcd. Would be interesting to try a DIY collar on it...
Niteye Eye10 Rotary
219b 3000k 9050 D200 (trailhunter LED),
Upgraded mcpcb, reflector and centering ring (moderator007 finds),
Driver has Strobe at double twist,
Sapphire lens (Archibald Tuttle tip)
Remove detente ball and spring, relube with Nyogel 767a high damping grease, and install glow marker (tx pinkpanda) on tail.
Whats not to Love?
What’s up with this reflector showing 4 bright spots?
It seems that quad effect is related to having the camera closer to the LED than the focal distance of the reflector.
Notice that reflector in the Eye10 is not all lit up, because I am holding my iPhone really close, hoping to show that the LED centering, turned out Really Well!
I checked and the same short focal distance quad effect happens with other lights… once I pull back to fill the reflector with the light of the LED, the effect disappears
this is a reflector from a Maratac CR123
up close:
farther away:
this is a reflector from a V10a
up close:
pulled back:
Yeah, but I would expect it to show more or less a ring. I guess large die size (and therefore more pronounced squareness) relative to ref size plays a role here…
BLF GT White Flat 1 WHY! PITA 
(Got bored, waiting on parts for a 90.2 build)
2S2P to 4P Carrier mod… simplicity at its finest…
Mtn. SRK/M6 Linear Driver… 5.2amps Big Spring….Simple 3 mode…
Hmmm so far so good… 725lm….680lms until batteries are DEAD!
Let the games BEGIN! 
Nice work KB!
Any throw numbers?
I’m curious to know numbers too. Great mod btw Kawiboy