That looked so nice, then boom, non anodized tailcap threads.
Comfychair has a post showing how to make an adapter ring to fit smaller optics into bigger heads. It should be doable with a drill press. I have a milling bit in the mail, so I'll be giving that a try soon.
Solarstorm/Fandyfire SC02 (don't have one but the size is right). It has an electronic switch so it needs a suitable driver.
Indeed! Size is very right. 22,5mm head opening..
Just look at it.
I forgot I had that light when looking for suitable lights. This light needs a quad rebuild!
On the UF-T50 & 'PH-08' clones, the bezel thread ID is 26.3mm, bezel front opening is 23mm.
Roche F6 uses a 24mm lens. The bezel opening is small (~20mm) though that can be enlarged. Great quality on those as a host. Not much space in the driver compartment, it would have to use the stock driver or a dedicated redesign of the BLF-20DD.
Helios has a F6 OSHPark driver in the works…
I don’t think it’s “in the works” so much as “waiting for a crash dummy volunteer to test it”. 
anybody have a link to comfychair’s honing down of an optic?
Suitable host for a 35mm triple optic? :-)
Or here: https://budgetlightforum.com/t/-/25551#comment-557387
I’m losing my mind, Wight! Thanks, Comfychair, I am subscribed to that one you posted as well. They say the mind is the second thing to go. Now if I could just remember what was first to go…
or 32mm 
?
http://intl-outdoor.com/noctigon-xp32-advanced-direct-thermal-path-copper-mcpcb-2pcs-p-808.html
That was indeed what I was hinting at :-) . The optic that fits that board is the Ledil Cute optic, which is 35mm diameter. It could be shaved to 32mm of course, but you will loose some beam quality and a bit of output.
I've not found any of that to be the case when cutting down the Carclo triples from 20mm to 17mm.
a nice host with this triple and a colored middle with custom firmware will be perfect.
Do you have the driver measurements?
I have not taken the light apart yet. Not planning to tear it down before Im doing a mod.
It might be similar to SC01. If so its 15,5mm and with an electronic switch mounted to it. Maybe someone else can confirm.
Hi,
sinner has a thread about a new host that he’s making and might offer, and I’ve posted over there about possibility of using his host with the quad setup:
I think that a Small Sun ZY-T29 might work. This pic is just with the Carclo quad optic in the light (not modded yet) to see the fit:
The optic is just about the same diameter as the opening, so probably would need to have a spacer to extend the pill forward.
Also, the ZY-T29 is a side switcher with an electronic switch, so I’m not sure about a driver replace to drive 4 emitters.
Anything with an attiny13 MCU can be flashed with momentary firmware. The BLF-17/20/22s will do 8.5-9A from a single 20R/25R/VTC5 into 3 parallel XPG2s, with 4 LEDs I'd guess that would go up to 10-11A.
17DD in a UF-T50 (momentary side switch):
Switch wires go to pin #2 & ground.