Lol - you make it sound so simple. But a lot of the multi-LED flashlights i found seem to be hard to mod (at least at my skill level).
400nm is at the end of long wave UVA. I tested both 365nm (Led Engin) and 400nm (some chinese from djozz) - and 400nm clearly returns most florescence from the amber.
I would like to build a light with one of these
SemiLEDs True Violet UV LED (400-410nm)
Led Engin LZ1 400nm-405nm (you can choose MCPCB on copper at the bottom)
FmC - my current favorite for finding amber is actually a 400nm C8 from djozz :-)
I agree - the Supfire M6 looks great, and I found a lot of threads about it here on BLF. But i reeeeeeally like the lightbar/light pod style as I can have a light with 6 LED's - and i don't care how it looks - as long as it puts out a lot of 400nm UV (though a ghost-busters light sounds cool)
And the Supfire is quite expensive compared to the light bars I found. Only problem is i don't know how the boards look on the light bars.
djozz - that SRK would be awesome. What about heat? -I think i read a thread somewhere that they are hard to mod. Can't find the thread though ...