[PART 1] Official BLF GT Group Buy thread. Group buy officially closed! Lights shipping.

So then I assumed correctly. The money is in the head.

Why are they using square stock? Round stock closest to it’s OD would be cost effective? It would scrap less material and can easily be turned in a CNC lathe.

Are you sure there using square stock for a round reflector?

I assume the link you speak of was intended for early buyers on the list?

I haven’t received any link for payment yet and hope I didn’t miss something?

The 3rd round of PMs has not been sent yet. (3rd round will start at #1050 on the sign-up list.) The PM will have the link to buy the BLF GT.

Where did you hear “square”? No one said that.

raining out im bored.
just shot the lux meter with the gt on MOONLIGHT
it was 1000 lux at 4 meters on moonlight :open_mouth:
probably more if i shot it at 10 meters.
crazy light :stuck_out_tongue:

I am guilty as is Flashem of picturing a “block” as a six sided object with square and/or rectangular sides.

Now that I have the GT light in hand, I can appreciate this prototype design more and wish it can come to reality someday…

Nikolas said, “big peace of aluminium block”… I assumed the word “block” was “square aluminium stock”.

I assume he meant to use the word “stock” instead of “block”. Meaning a solid piece of material. Block could be any shape now that I think about it.

OK… It is then up to Lumintop & Neal’s QC to give final pass to reflector.
TA stated that Team OK was given to V1 reflector & anything ‘better than that’ was a bonus.
But it also seems LT is making every effort to provide the best reflector possible in this price point light. Maybe even better quality than was expected.

The slight inconsistencies we are seeing appear to be in the final finish/coating, not in the machining.

It appears possible that maybe a tiny number slipped through the QC control. But, as stated; that is yet to be confirmed.

As I understand what TA said…. everyone will get ….
……. a reflector ’at least meeting’ the standard the Team OK’d.

To me, NikolaS was simply saying they were using a big CHUNK of aluminum. I did not read it as a reference to shape.
I read it as “block” = “chunk”…… nothing more.

block
bläk/Submit
noun
1.
a large solid piece of hard material, especially rock, stone, or wood, typically with flat surfaces on each side.
“a block of marble”
synonyms: chunk, hunk, lump, wedge, cube, brick, slab, bar, piece
“a block of cheese”

Ok all. Most of us knew what he meant. Lets move on. :person_facepalming:

Picked up a new toy……………indispensable measuring tool today. I’ve been what I call a connoisseur of light for a decade or so now. My sweet spot is 5500K. I’ve just not been able to get into the neutral or warm Whites. There is only 1 incan bulb in my house. Everything else is LED 5000K or 5500K. Now I can precisely measure all of my home, car, searchlight and other lights’ color temps and the REAL CRI, not just the averaged number usually quoted for marketing purposes. I’ve learned quite a bit over the last week while researching my purchase. The typical CRI number we see is the calculated average of 8 colors chosen decades ago by a Body in France, the name escapes me now. It represents how close a light source comes to the spectrum emitted by Tungsten incandescent light. CRI of Tungsten light is 100 on the CRI Scale. Extended CRI adds another 7 colors to the mix and the Sekonic 7000 meter has the capability to measure and display the additional 7 additional colors. The more color samples that are taken, the more accurate your CRI is going to be. But even CRI is a bit outdated and there have been and are processes in-motion to use another standard or two. There’s a lot more to it but i won’t get that deep. Suffice to say that below, the first 2 pics are of readings of the Sun. The first shows the Color temp in Kelvin (Tcp on the meter) of the Sun at 3:15 PM. Don’t pay attention to any of the lux reading as I did not set up for a precise Lux measurement. The next pic shows the CRI RA average calculated on only the first 8 colors in the bar graph but it also shows specific individual CRI readings from all 15 samples. The higher the bar graph and number to the left, the higher the CRI of each of the sample colors and the closer to the Tungsten standard the measured light source is.

The 3rd and 4th pics are of the same type of measurements of the GT on HIGH, not Turbo. The 5th and 6th pics are of the GT on Turbo. Notice how the R9 Red is absent from the GT and is actually a minus number.

Sol at 3:15 PM Dec 12 Text Mode

Sol at 3:15 PM Dec 12 Bar Graph Mode

GT at Top of Ramp Text Mode

GT at Top of Ramp Bar Graph

GT at Turbo Text Mode

GT at Turbo Bar Graph Mode

Now that is one awesome tool. I hope you know you are now obligated to test and upload results for every light you own lol.

Nice BVH, bet you’re having fun with that!

Can’t we buy the new 5700k LED already mounted without sending our old LEDs back to Richard?

Problem is, there is no LED boards in the size the GT takes available

You have to send him yours & he will reflow it , I think.

If you search the net to purchase a “block of aluminum” google will show you nothing other than square, flat, or rectangular stock. Anyhow, I get the point…

Teacher, I would like to be on the same page here. This block or chunk of aluminium is round stock and I would assume it is being turned in a CNC lathe?

I’m curious to how this reflector is being machined. Do you or anyone know of the page this info can be found or if this information was revealed, possibly a separate thread?

Not everyone here realizes how much work and time is involved into producing such a (masterpiece) flashlight like this…!

As far as machining goes, I think we should shine some light on the subject. I think it may help ease the frustration of some of those who were unsatisfied or complaining about there reflectors finish.