Thanks for this. Wait, so does a dedomed sst40 throw very similar to a dedomed xpg2? I would t think it would, but looking at your numbers on those host,especially the c8, it seems like a xpg2 would give similar results. I think I remember seeing you get like 175 kcd on a c8.
Bought them here, they look ok to me, nothing to indicate they are fake!
They look exactly like in djozz first post:
They are CW for sure (which is ok for me because I need them to have best throw they can and NW or WW
doesn’t throw as good as CW) but there is no seller on aliexpress that will provide more precise informations.
I would be very happy if I could buy from Mouser or MTN (all those nice drivers :/) but I just can’t afford
paying 60$-70$ for 10 leds + 20-30$ for shipping 
These aliexpress leds’ specs are :
Flux : N4
Color : BA
Voltage: VK
As stated before, I ordered from Shenzhen Great Technology Co.,Ltd. All came with bubbles. Some small, some big(ger). So at least some of them should be dedomed. Question was: shaving or solvents. I decided for the first and remembered that TK once mentioned using a washer. The bond wires protruded about 1.5mm in the dome, counting from the star. Of course I had no suitable washer in my box of bits and bobs. What I did have was this (very old and rusty) key to a bicycle lock.
I gave it a tour on my whetstone, and then it looked like this. A nice smooth working surface for my knife.
With a handle. And the 7mm hole almost directly offered a perfect fit for the base of the 5050 LED.
So you put the tool upon the star. The LED sticks out a bit, and presto!
Unfortunately I used the wrong knife. Or the knife wrong. Despite the smooth tool, the surface of the LED looked like a plowed field. Time to execute plan B: using MEK. Two hours later the LED looked like this
The result? I’m not sure what to think of the absolute values on my LX1010B luxmeter, set at 2 meter. I’ll give you the outcome “as is”. They should be treated as relative results. Only comparable within the following list.
Nevertheless a nice outcome for my first dedome of an SST-40.
Convoy C8 with X5/X6-driver. XM-L2 with dome: 102
Convoy C8 with X5/X6-driver. XM-L2 dedomed: 183
Convoy C8 with X5/X6-driver. SST-40 with dome: 112
Convoy C8 with X5/X6-driver. SST-40 dedomed: 194
Convoy C8 with LD-2. SST-40 dedomed: 192
For reference
Olight M2X-UT with dedomed XM-L2. Stock: 290
Thrunite TN32. Stock: 424
Edit: did some tinkering and added a few results. In all cases the SST-40 offers a bit more throw than the XM-L2 U2-1A.
The bubble (s) come from re-flowing, got seven of them from Kaidomain and re-flowed as normal, the last 2 sat a little longer and developed a bubble (s) inside, no artifact’s in the beam from them that I can see, but then they are in a triple mmuX3 pulling just over 24amps. (right click then enlarge to see bubbles)
IJOY 21700 and Modified FETDD driver using the Hyperion FET that TomE turned me on too! :+1:
Scary Bright! :cowboy_hat_face:
I also dedomed some of this leds and I am not that happy with results, I used heated liquid method that gives me almost perfect results with XPE, XPG, XML and XPL types of leds but SST-40 is tought cookie. In all cases silicone dome did not separate from phosphor surface so cleaning was required and that never gives “perfectly clean emitter surface” results.
So, I am not happy for now.
Click to enlarge…
As you can see, one of them is missing a bit of phosphor and the other one has tiny pieces of silicone that cant be removed without further damage to emitters surface…
Use straight Toluene. Dome comes off in about five minutes in finger warm liquid. Canned air is good to remove silicone leftover. Be careful to heat it though. Tried two times in boiling water and the LED came of with the dome. Also the tint is fantastic!
Left: Sst-40 dedomed in hot nitro thinner.
Right: Sst-40 dedomed in finger warm Toluene.
^ Is this the first direct proof that a different dedome method results in different tint? Or is there more than just the dedome method different in the above pictures?
I can’t be 100% sure at this point, but they came from the same reel. In the next two days I’ll try the same thing with another SST-40, XP-L, and XP-G2.
Edit: I’m sure that there’s other members who have found other ways to eliminate the green shit. But I get the feeling that they are very reluctant to share their methods…
Can u test the lumen/lux also? Using the same light with the dedome sst40, xpl, and xpg2?
I have no way to measure lumen, but I’ll measure the candela for sure!
That dedomed tint looks fantastic Sledgestone!
I wonder if this stuff is the same as what you used… This one claims 99.7% pure Toluene
http://www.ebay.com/itm/Toluene-Toluol-500mL-Reagent-ACS-99-7-Solvent-Paint-Remover-Nail-Polish-/272269129997?epid=729708978&hash=item3f6481390d:g:O8YAAOSwj0NUielh
Yeah, that’s the stuff.
500ml is a nice amount, USA seller, shipping to NL would be either impossible or very expensive…
That should be the same.
Mine is 100% pure though, but that shouldn’t make a difference.
I am very confident sst40 dedome outthrow xpl dedome in both lumen and lux… I need opinions from you. Thanks.
Well the SST-40 will have much more lumen and I think throw should be similar. But the SST-40 will run much hotter at over 8 amps vs the XP-Ls 6 amps.
Well, whaddayaknow…
€19.48 shipped from DE to NL.
Ordered and payed just now.
Hey, that’s a fairly good deal too.
New listing? Hadn’t found it previously, or maybe i thought it was too expensive… (?)
Ordered this to try out… $35.09 shipped….http://www.ebay.com/itm/Toluene-Toluol-1000-mL-32-fl-oz-/201393760689?hash=item2ee400e9b1:g:I7QAAOSwDNdVsQ2r
MEK hot or cold just ain’t getting it for me….
Oooh - KB, you beat me to it, but that was a help 
. I got an unused can of MEK sit'n around. Keep us posted - it's expensive though but interested to see if it works.