OK, time to assemble and get it ready to power up.
.
.
Drill another hole in that $190.00 light. 
.
Spring modding too. And yes, that is a group buy beryllium Copper spring provided by ” BlueSwordM “.
.
.
Some Dremilling.
.
.
Switch wiring confusion. 
.
.
All wired up.
.
.
.
.
.
]!
.
.
Just taking a break to watch the Saints game win.
It will fly or die today…
.
.
I so hope your going to fly. 
The Water cooled flashlight is a success !! 
Here are the last assembly pics for the XHP 70.2 P2 1A LED Lexel 12v 7.8A driver. 
.
.
.
The aluminum coil is held in place with Velcro.
.
.
.
Cavitation can be a problem but once the air bubbles were removed it recirculated without issue.
.
.
Even a blind squirrel gets an acorn every now and then.
Surprisingly, it was wired correctly the first time. 
.
.
I see light.
.
.
.
.
.
.
I would like to say Thanks to everyone here at BLF that helped giving advice and direction that made this possible. 
Next thing to do is gather results and do some testing. For this part, much help from you guys will be necessary, I’m a noob doing this.
If weather permits tonight we will get more pics with phone.
.
Intense.
Wow GJ! looking forward to hearing its performance!
Nice !
Cool!! (pun…?). Awesome project CNCman. Interested to see how much difference your mod has made (with regard to thermal abilities of course).
Still getting things ready for some testing on the light and making a Lumen tube to check it also.
.
I was not sure how the driver would handle long run times so we decided to add a copper heat sink to the rear of the driver with Artic MX-4. There is 3mil tape in the area of a possible short.
.
The light was coming on when the battery tube touched the spring and not when seated. So we turned the outside diameter and taped it.
.
Finished compact battery holder.
.
Just under 8 amps @ 12 volts. Guessing around 8500K lumens, not able to get accurate readings yet.
.
8 inch lumen tube is not calibrated yet, guessing it’s reading high 2K.
.
Re-plumbing with good tubing.
Beam shots don’t really show how nice it shines.
low ramp start.
.
25010 lux at 6.46 meters is 1,043,707 CD and 2043 meters throw, approx 8500 lumens.
.
This light just blew a mcpcb 1 day after I changed a burnt XHP70.2. I will fix it again with another modded mcpcb.
Texas Ace has a Luminus 90.2 kit ordered I will probably put in, but that will require more invasive work, so I may put that kit in another big light.
.
I know this light looks strange, but it is an experiment in heat control. If were possible to find a very small pump, it would be possible to incorporate the cooling into the head ( no exterior tubing ), and improve its appearance. 
.
originally MATEMINCO MT35 PLUS, XHP35 HI, 4 x 18650 batteries
.
I want to Thank the many BLF members who helped me during this mod. 
The water-block is genius, so how about taking advantage of the length of the battery tube for cooling the water temperature ?
Something like a battery tube with milled fins on the whole length and the water pipe going through the fins. Sorry for the 4 years old kid drawing
I never thought of going around the battery tube and adding a handle, Good Idea
Definitely looks better too Yes, that is the way to do it, wish I had thought of that in the beginning
I couldnt think of a good way to do build water blocks but your builds have given me some good ideas to work with.
Thank you for post #44 that very informative vide and your beamshot, quite impressive.
.
This one is much cheaper and easier to make.
.
They are both well done.
I am thinking the copper tube with a web soldered between them so it is similar cross section to an I beam would be rigid enough to take the place of a spider.
.
Mine are overkill in size, you can go much smaller because the water will take the heat away, just make sure the pump is on before the led.
.
I’m searching for a front mirror coating also, found this one for glass, it might work on aluminum. Just need to learn the process, not buy the kit, its expensive.
.
.
.
This is a great build :o
Well done CNCman
Sorry wrong thread
Thanks for the comments BLF’rs
Sorry it took so long to finish.
Awesome project. I wish I had a lathe and mill to do all that you do. 8500lm is nothing to scoff at for sure.