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Old 08-20-2013, 07:27 AM #1
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Default 3.5W Black Anodized C6 with Barrel Extension, 2X 18650

There have been many of the "survival lasers stainless c6 + DTR 9mm diode" builds so far, but I've heard a common complaint:

THEY GET TOO HOT!

I don't like large hosts personally, and wanted to see if anything could be done about the heat.

For the build I used a black anodized C6 host from Survival Lasers, with their extension barrel to fit two 18650s. I'm using, big surprise, the DTR 2.3A X-Driver with a Copper Aixiz module and the G2 single-element lens.

The stainless hosts look fantastic, but they just don't move any heat away from the module. The body of an aluminum host like this is a fantastic radiator, you just have to provide a nice thermal path out of the heatsink.



I machined a custom copper heatsink, which seats the diode module via press-fit (with a touch of arctic silver) for best thermal contact.

In order to transfer heat from the heatsink to the host, the first thing that has to go is anodization! I used a boring bit to shave clean the inside of the head of the host, and applied LIBERAL quantities of thermal compound to the heatsink and the inside of the host before final assembly.

I also applied some compound to the threads that join the head of the host to the body (the radiator). Every bit of heat that you can evacuate from the heatsink is a bit that your diode doesn't have to deal with!

Some shots with a touch of smoke:




It looks photoshopped (like the WL promotional pics), but they aren't, I promise... I'm too lazy for that.

The laser takes about 1 minute to reach 90* F, measured with a laser thermometer. I'd call the duty cycle about 1 minute on, 2 off.

The entire body of the host warms up nicely, keeping the heatsink nice and cool. Just some simple tricks that really help!

I tried making some CD-case burning videos, but it just wants to set everything on fire!



These diodes are awesome, thanks to Survival Lasers and DTR.


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Last edited by highvoltagefeathers; 09-22-2013 at 03:50 PM.
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Old 09-22-2013, 01:03 PM #2
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Default Re: 3.5W Black Anodized C6 with Barrel Extension, 2X 18650

Looks Cool,
Do you have a pic fo the machined copper heatsink?
Is it bigger then the small one that can bi fitted inside the C6?

Last edited by kobi g; 09-22-2013 at 01:09 PM.
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Old 09-22-2013, 01:31 PM #3
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Default Re: 3.5W Black Anodized C6 with Barrel Extension, 2X 18650

We want to see the guts... Did you lpm the unit it? 3.5W is very sweet. Good job.
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Old 09-22-2013, 01:37 PM #4
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Default Re: 3.5W Black Anodized C6 with Barrel Extension, 2X 18650

Love the aqua blue beamshots, what camera + settings are you using?
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Old 09-22-2013, 03:50 PM #5
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Default Re: 3.5W Black Anodized C6 with Barrel Extension, 2X 18650

I'd take it apart and show you guys, but I need a second person. The two small holes in the top of the heatsink are for a tool which holds it stationary while I unscrew the cap, so that wires don't get twisted. This requires 3 hands.

I left the smallest area possible at the base of the heatsink to accommodate the diode pins and wires (left as much copper as possible), so re-assembly is tedious.

If you're familiar with the VERY popular C-6 builds, you already know the general shape of this heatsink.

Here is a link to the camera settings for the photos.

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Old 09-22-2013, 03:55 PM #6
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Default Re: 3.5W Black Anodized C6 with Barrel Extension, 2X 18650

Quote:
This photo doesn't seem to have any Exif data.
Hmm I can't seem to see the EXIF data for some reason?

Edit: I think it's the Droid Razr HD?
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FastTech is the new DX. (Nope, prices have gone up, nevermind!)


Last edited by ryansoh3; 09-22-2013 at 03:56 PM.
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Old 09-22-2013, 04:00 PM #7
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Default Re: 3.5W Black Anodized C6 with Barrel Extension, 2X 18650

I can see the EXIF just fine when signed out.
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Old 09-22-2013, 04:03 PM #8
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Default Re: 3.5W Black Anodized C6 with Barrel Extension, 2X 18650

Weird, I couldn't see anything before, but now I can.

Very nice pics once again!
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405nm Amazon Set
445nm BAMF Link
445nm 2358mW Peak The Bushwhacker by Dogs Best Friend
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532nm "200mW" DealExtreme Pointer
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Old 10-01-2013, 05:55 PM #9
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Default Re: 3.5W Black Anodized C6 with Barrel Extension, 2X 18650

Nice job, congrats! You got a good diode.
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