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Old 11-11-2011, 12:05 PM #1
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Default Module size and Heatsink

Alright. First off I wanted to ask what is the most commonly used size for your average laser module.
Secondly. What size drill bit would be the best size to use on a heatsink to make said module fit snuggly in there?
thank ya.


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Old 11-11-2011, 12:26 PM #2
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Default Re: Module size and Heatsink

Most common size is 12mm but the diameter can between 11.8 to 12.0mm due sloppy Chinese manufacturers. If you can get a drillbit of 11.8mm and you can always make the hole larger by pushing the bit against the hole. For easier mount get a drillbit of 12mm.

See also this thread, Does anyone know, or have the ability to measure the actual diameter of an Aixiz?
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Old 11-11-2011, 12:27 PM #3
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Default Re: Module size and Heatsink

An Aixiz module is pretty much the standard around here. They are 12mm in dia... So if you are going for a pressfit type grab a 15/32 inch drill bit, but if you want to use a setscrew and be able to remove the module a standard 12mm drill bit will do the trick.
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Old 11-11-2011, 12:39 PM #4
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Default Re: Module size and Heatsink

excellent, excellent. Thank you both. That is exactly what I was looking for.
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Old 11-11-2011, 12:44 PM #5
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Default Re: Module size and Heatsink

I take it hypothetically of course. Instead of using a set screw a nice thin coat of arctic silver 5 would do?
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Old 11-11-2011, 12:55 PM #6
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Default Re: Module size and Heatsink

That's just thermal compound. You would need thermal adhesive. I'm not too sure about the arctic silver range, so I might be wrong.
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593.5nm - Regal 5
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532nm - 620mW+ lasersman Firedragon III* - 100mW PGL-III-M from JETLASERS* - 70mW Rayfoss Host*
~~~ - 175mW Rayfoss Host - <5mW WL Core - 55mW DinoDirect review laser*

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445nm - 3W Big Boyz Laser - >1.1W Cree C6 Host - 650mW WL Arctic
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Total: 71,868.5 mW

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Jetlasers wrap around 190-540nm OD4+ goggles*
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Old 11-11-2011, 01:38 PM #7
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Default Re: Module size and Heatsink

Quote:
Originally Posted by Ilotrophic View Post
I take it hypothetically of course. Instead of using a set screw a nice thin coat of arctic silver 5 would do?
Personally I would take metal on metal with pressure. That is always better than a thin layer thermal compound in between without pressure. And it is messy working with paste.
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589nm 100mW PGL-III-C-589
635nm 70mW Sanyo SenTorch
638nm 175mW Ehgemus, 1W Rook
660nm 1216mW Skylaser PL660, 263mW LPC826 C6
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Last edited by Blord; 11-11-2011 at 03:57 PM.
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Old 11-12-2011, 12:26 AM #8
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Default Re: Module size and Heatsink

Personally, when I do a module press-fit into the sink, I turn the Aixiz module on the lathe to remove the chrome plating.
Then I bore the sink to the OD of the turned module.
This makes raw brass in direct contact to the sink for optimal thermal efficiency.
I realize that most members do not have a lathe, but I figured I'd give my .02.
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