Hi guys, just wanted to share my new light just in case it interests anyone. I was trying to get a nice dual channel throw/flood light before my trip, and unfortunately Hank and J Lee couldn’t get me what I wanted in time, so I looked to modifying an amazon light. I ended up with a Sofirn IF25 with 2x sst20 2700k hi cri and 2x osram w2, semi-frosted optic, always on switch light, magnetic tailcap, and fd36r clip. And it has usb-c charging and is submersible up to 2m!
It took me a couple tries to get the osram emitters connected well with good alignment, but in the end I got a good result and I’m happy with the beam coming out of the throwy stock optic. I’m not totally satisfied with the sst20 beam. The frost evened out the beam a bit, but I still wish it were floodier and had less of a hotspot.
I wired the red leds in the switch to be always on, driving them from an open 3v lead on the driver through a resistor (1k? I forgot). The light isn’t quite visible in direct sunlight, but is pleasantly present in the dark. It drains a little more than 1mA and turns off when the voltage drops below 2.8V. If I want to turn it off, a quarter turn lockout does the trick.
I inlaid neodymium magnets into the tailcap, since a magnetic tailcap is very important to me. I like putting my knife in a tree and setting up a light to work under. It worked out really well and has a good solid strength without being disturbing in my bag. I could have made it look prettier, but I was rushing to catch my flight…
The clip I got for free from fenix! I emailed them asking about sourcing one, and next thing you know they had already shipped it to my house. That was on a thursday, I received the clip monday, the day of my flight. It’s the perfect fit. Thanks
Todd J from fenix!
I had wanted to reflash the unit, but unfortunately found it uses a microchip rather than attiny chip.
Overall I’m really happy with how the light turned out, especially given the short time I had. I do wish the moonlight was lower, there was less of a step up from moonlight when ramping, and that the sst20 channel was more floody. I’m thinking about modifying the optic, and started a thread about that here Optic Modding, floodier beam?. Maybe down the line after this trip I’ll try replacing the driver with something anduril, and when I do that I’ll be sure to add a resister to the usb-c port so that I can use usb-c to usb-c cables.
Nice! Way to make it yours.
I just bought an IF25 with plans to modify the tint ramping into flood - throw ramping. I plan to replace the LEDs and frost the lens just like you did. The hard part is picking the LEDs. I like the Osrams for throw and sliced Samsungs for CRI and flood. The problem is the tint differences. I wish the OSRAMs came in a neutral so the colors blended better as you ramped from flood to throw.
I plan to try some combinations to see what I prefer. May end up with all sliced samsungs with the difference being modifications to the lens for flood. I won’t know until I see how much throw the optic has.
You could add small circles of DC-Fix over the flood LEDs for more flood.
FB
Out of the blue sofirnlight.com happens to be selling optics and switches for IF25(A) on their store. Did you have something to do with that? 
100% agree about ramping speed, definetly should have been tweaked.
Yea, DC-Fix and LH351D would be my choice for flood. But slicing changes the profile to much for throw.
This is a great mod. I’ve always wanted to do the lighted switch mod. I took mine out to compare with a D4V2 floody optics. I was interested how 2 leds shines after seeing beamshots of ramping D4V2. The conceived brightness and beam is about the same between D4V2 (nonramp) and IF25 (2leds).
The only mod I did is recently I put 2 layers of 25% Zicron filter just on the 6500k and it reduced the Kelvin to 5800 and almost neutral tint. It’s my only pocket size 6000k flashlight. That and a grip ring as it gets toasty after a while.
I would think about replacing the sst2- with lh351d, but getting a hold of them while on the road won’t be possible. The zicron filter to bring down the temperature of the osrams would be nice too. I’ll keep thinking about the optic, let’s see where that goes.