If you fin the back of the light how will you remove the head from the body?
The back is ribbed. The 6 fins are attached to a cap. Cap is screwed to the battery tube. Battery tube is attached to the hand. Hand is attached to the elbow.
I got it all worked out. :confounded:
The finger bone’s connected to the hand bone,
The hand bone’s connected to the arm bone,
The arm bone’s connected to the shoulder bone
Dem bones, dem bones, dem dry bones,
Dem bones, dem bones, dem dry bones,
Dem bones, dem bones, dem dry bones,
HaHaHa! Rude points! Err… I mean… “Reported Post” points! Err… something…
So, I politely countered toddcshoe’s assertion that this light really needs firefly mode, and that lots of people need/want it that way. Furthermore, I said that it was possible with current BLF designed driver hardware and firmware already and suggested he could mod a light to get what he wants. He attacked me for whatever reason, then said he was going to block me. All of this is just a few posts back. Anybody can read it by just jumping back a page.
So, I’m guessing that he’s the one who hit the “Report” button on two of my posts in this thread. (I don’t know that it was him, but I’m pretty sure it was.) Full Disclosure: I did mark “Report” on THIS post of his because of his actually attacking me for whatever reason. So, maybe he decided to “get me back” or whatever. 
toddcshoe, you need to learn to talk in a civil manner about things without losing your temper. If you weren’t such a jerk, you might remember that it wasn’t that long ago that I agreed with your idea to make a BLF special with low-low modes being a primary feature. Crazy Idea. BLF Moonlight Special Flashlight. - #18 by DavidEF
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Spartans, sorry for the interruption (again). I just needed to get that out. Hopefully toddcshoe will “Report” this post also, so I know he read it. 
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Okay, now to get back on topic. I really like the fins on the head, but it is my sincere wish that you do not put any of those fins on the tail. I like the size, shape, and color of the light as is. I only would like to see 50% more fins on the head, and a slightly larger switch button. I’d like the light to be built to the scale of the renders you and Andrew have shown, with a 21700 cell size tube. Obviously, these are my opinions, and you’re free to choose whether to take these suggestions on board or to summarily dismiss them. 
Thank you for bringing this design to us. I’m glad you and tatasal are in talks, and I’m sure a manufacturer will rise up to make this light for us all to enjoy and they will have it done for sure before Christmas. I’m just not going to try to predict which Christmas. 
One step forward……
What is happening is that tata has contacted a major manufacturer that is interested and I have another major one who may be interested too.
Meanwhile, with both manufacturers, they have products that mostly meet what I and mostly “we” would like to see in the Sabre so it’s only a matter of casing design and adopting it to their existing line of machining/assembly. In theory, this could move fast……or not.
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Meanwhile, back at the cray-cray factory on top of my shoulders, I keep wondering where are the material limits to more and longer. Why not 100k lumens? Where and what can be pushed to the limits? In fact, I love to get an opinion from the forum experts on the bleeding edge of led temperature limits and circuit design.
I have a cray-cray design that is revolutionary….
I like the design a lot, and the switch seems to work for me on the blue host but not on the black though i can’t put my finger on exactly why, and i want to twist the head so the switch lines up between 2 fins instead of being inline with 1 of them, but i like it! I’d have one each of the blue and black.
As for specs i see a 21700, single emitter light with a beam profile similar to an XP-L HI based C8, 5700Kish.
Specs:
21700/18650 support.
Single emitter light with Samsung LH351D 80CRI 5000k.
CC 5A FET driver/DD FET driver.
Dual BeCu springs for absolute highest current
NarsilM/Anduril support
FET switch for tailswitch driver
When Andrew rendered the design. it wasn’t a “final” one and I had a more utilitarian one in mind. But it seems that sleek look has attracted a lot more attention then I expected. I don’t know how viable or cost effective it is for production. If it is, I could redesign it, at least for that segment, but I don’t know if they want to produce it.
To clarify things here, I’m not paying Y dollars to make X flashlights. I’m not a retailer. It is a design that I can work with them to make it production feasible, but ultimately they need to make a profit.
I’m working on the switch. If I can, I will put a flat spot and in between the end of two fins. Plus a bit recessed to keep it from getting damaged.
As for the specs, pretty close to what you wrote. Plus USB charging and a few other features. The end it would be the manufacturer who has to decide, but obviously they would have to meet “we” the enthusiasts market expectations….unless they want a stylish door stop.
Can the Samsung get up to 3500 lumens? Why am I designing a better mousetrap if we can’t get it to roast one? After all, the ideas origins was better cooling.
And why 80 CRI? Can’t we get better?
Tail switch? TAIL SWITCH? :confounded:
Nyet to the tail switch. :person_facepalming:
1. Nah, only 2000 lumens at max if we count the optics losses at full power.
2. Because we get can get the same brightness bin in 80CRI compared to 70CRI, but not in 90CRI.
3. That’s why I said FET tailswitch. It would actually be an e-switch driver, just in the tailcap.
If you do want 3500 lumens from a single LED, then this might be it:
https://www.mouser.ca/ProductDetail/Lumileds/LMZ7-SW50?qs=sGAEpiMZZMu4Prknbu83y1zhPTc0SxQxvwEYqYGjGnG7rRpn1R0OrA%3D%3D
Magnificently powerful, but we do need a boost driver to drive it… which is why we have BLF designed boost drivers 
A bit over my head there…
Please keep in mind that I don’t know specific electronics or led’s. My mind sees a problem and seeks a solution/design.
If/when I find a manufacturer, I want it to fit the level of an enthusiast light. Obviously I’m going to ask for input, but I and we must also balance the abilities and within the parts availability of the manufacturer.
The upside is that all the good parts are out there and I’m sure it’s common knowledge here.
Ahhh…I have to go, I’m getting my package of dilithium crystals….
Thanks to tata for introducing us, I’m going through the discussion phase with Lumintop.
In part, they want three virgin members of BLF to sacrifice to the Flashlight Gods.