With 20 to 17mm adapter?
And the same as L21A.
I ordered one a few weeks ago, should be here soon.
I was a bit too enthusiastic with filing :person_facepalming:
you can order a L6 reflector and add a note L21A reflector.
Well I am glad I have a spare S3 host lying around, but could you please note such unobvious limitations in the description of the items?
Additionally to what has been pinpointed by Tom E (the “U” 4040 footprint is for both Boost HL and HX), concerning the color or output type note that those with a letter in their suffix are phosphor converted emitters with blue pump (white TG, yellow FY and pure green F1) whereas those with just numbers in their suffix are native pumped “monochromatic” light sources (blue 14, true green 13 and red 23).
Which of the current LH351D from Simon/Convoy to take now - 4000k vs 5000k?
I’m going to try S2+ with new 5A driver after calming comments, that it’s not going to melt.
It’s just a matter of personal preference. 4000K is more on the warm side. 5000K is considered to be neutral white. But both render colors very well.
I wanted to go 4000k (which I already did for my T2, on the way to me), until I read some stories about 4000k being too green.
I find the couple of 5000k I have to be more green than the 4000, but ymmv.
If you can do it, I’d recommend the 5000k then slice the dome off
No slicing for me 
I don’t want to break it, immediatelly after getting.
But that’s the tinkerer’s way
What about 3500?
I keep hearing how 2700 is just beautiful, but didn’t hear much about 3500
“Is the tint ok?”
“Dunno. I swapped the emitter as soon as the flashlight arrived.” :innocent:
thefreeman did a thorough study of the slicing effects in beam profile and intensity for the LH351D emitter:
LH351D slicing measurements : output, tint, tint shift, beam profile, intensity.
Esentially speaking 1mm is the sweet spot, with the highest intensity gains and the most consistent CCT and DUV vs angle results.
Just get some 1mm washer(s) or a feeler gauge set to aid you in guiding the razor blade.
Is the slicing height the distance between the PCB and the top of a washer sitting on it?
I.e. A recommended 1mm slicing height would simply be: place a “1mm thick washer” on the PCB around an LED and use it as a guide to slice the top of the dome off.
I only ask to rule out measuring from the top/square bit of the LED to the top of the dome. :student:
Yes that is TimMc, place a 1mm thick washer around the emitter just over the MCPCB, and use it as a slicing guide. You remove most of the dome, but still leave a protective layer on the led. It should sort of look like an XP-L HI emitter.
Available @ Simon’s Ali store
Actually, I don’t see any point in S21A since S21B became available - it beats S21A in both looks and functionality.
Purchase is not obligatory. Buy what you like. But you would be surprised how well old models sell.
Clear switch cap would be better imo.