I gained just a bit more confidence in it, and that was actually a particularly ‘shaky’ day with too little sleep 
Nice mod! Makes my UV-triple seem insignificant… :-/
+∞
Haha, modding for fun; mod first, think about why later…
i have modded one of my 2 trustfire tr-3t6 flashlight into a warm white donut spitting 3x dual nichia 219A. I like the cheap way of modding something into a dual nichia 219A, but modding a SK98 or putting matte tape over the front glass is more suited for a dual led board…
I love it djozz. Now I want to make one too. Like you, I don’t know what I’d use it for, but it’s neat.
Any recommendations for UV emitters for me to try?
There’s a few considerations. I was thinking 365nm emitters first, but I did not dare that because it is more dangerous and more invisable. and then I would like a UV-pass filter to complete the build and a 60mm (or what is it?) ZWB2 filter is very expensive. And I would like good quality 365nm emitters and 9 of them are pretty expensive. So 365nm was out for me.
And then I found these LG 385nm emitter for cheap ($2 per led, so $18 worth of leds) on aliexpress, LG is a decent brand, the leds are a fairly recent model (but not the latest from LG) and 385nm was something I had not tried before.
But this would make an impressive light too with 400nm leds. You need 9 of them, and of 3535-size to make it possible to use the stock ledboard. See if you can find LG-leds or a somewhat decent chinese one.
If I would have a buyer, I could build one with 9 of led4powers 365nm leds and one big ZWB2 filter, it would be a $200 build. I guess it would be a forensic scientist’s wet dream. 
Very interesting project :GRADE: :GRADE: 
I am new to this world of modifying flashlights. I have a question:
The paste you use to lubricate the LEDboard - the 9 locations where you took LED emitters of …. is it a form of conductive glue instead of soldering, which also can detach again when you heat it up? ??(I can see that you put your LEDboard up on the heating element again and adjust the LED emitters subsequently) Please link to the product. It must be found here in Scandinavia also 
Regards.
Michael L., Denmark
Hi Michael, it is no glue, it is solder paste: a mixture of fluid rosin and tiny 63/37 Pb/Sn solder particles, it works just like normal solder wire. This paste is standard when reflowing SMD-components on circuit boards. I got mine from Fasttech, it is really cheap stuff: https://www.fasttech.com/products/0/10003546/1261003-chips-repair-tool-soldering-paste-grease
Thanks a lot
Regards
Michael L.
I need one of those for scorpion hunting here in Arizona. How much did that cost you to build?
Wow that’s not bad for the ultimate scorpion hunter!! Thanks for the idea and the info.