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Old 06-28-2010, 07:06 PM #1
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Default 445nm lab-style heatsinks

Maybe this can be a place we can gather some links to heatsinks for high power laser use?

My intention to this thread was this piece of metal I found on ebay.
**8020 T Slot Aluminum Extrusion 10 S 1010 x 24 N - eBay (item 220327634447 end time Jul-03-10 10:25:11 PDT)
It's 1x1 inch, 24 inches long. It has a LOT of air surface to it, which should provide excellent cooling for a laser. No fins, except the T-shapes that extrude from the middle. The long length means you get multiple heatsinks out of it too.

Anyone ever tried these before?

Do you think it would make a good heatsink for lab use? Heck, you can even put a fan on the end and it would get some good air flow between the T's

**8020 T Slot Aluminum Extrusion 25 S 25-2503 x 48 N - eBay (item 330294700458 end time Jul-08-10 08:37:05 PDT)
This would be nice for a peltier system, they have some with 3 and 4 sides too.

**T slot aluminum items - Get great deals on Business Industrial, Home Garden items on eBay.com!


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Old 06-28-2010, 07:17 PM #2
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Default Re: 445nm lab-style heatsinks

this is what I am using. But it's a bit expensive:

Lab style heatsink for 12mm laser modules - $20.99 : Modwerx Shop
I also have used CPU-heatsinks (with fans), and a 12mm hole drilled in them with success for DIY labby's.
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Old 07-01-2010, 06:16 AM #3
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Default Re: 445nm lab-style heatsinks


i might make another if anyone is interested.
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Old 07-01-2010, 06:37 AM #4
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Default Re: 445nm lab-style heatsinks

Thermoelectric cooling, coolers, modules, heat sinks, exchangers, Peltier coolers, devices - TE Technology

If only these did higher volts...The other one that does 4.7 is just 2mm too big for a 18650 jayrob host.

I just wondered, Besides the huge amp draw these have, would it even be good? I'd think if you wedged it between 2 copper pieces, it would work. The issue is when the heat side gets too hot, it will actually heat the cold side, causing issues.

My point is, they do make peltieres with holes in them. To stream wires from diodes through
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Old 07-01-2010, 06:46 AM #5
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Default Re: 445nm lab-style heatsinks

They do make TEC's with holes in them, but in a portable laser they are a waste. They waste battery power, cause the host to heat up even further, and don't do anything to help the diode.
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Old 07-01-2010, 06:47 AM #6
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Default Re: 445nm lab-style heatsinks

Class IIIb Green Laser Modules - > 5 mW for OEM Products, Research, Hobbies

Last item on the page.

I just wish they had cheaper international shipping.
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Old 07-01-2010, 07:39 AM #7
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Default Re: 445nm lab-style heatsinks

Quote:
Originally Posted by jbtm View Post
Maybe this can be a place we can gather some links to heatsinks for high power laser use?

My intention to this thread was this piece of metal I found on ebay.
**8020 T Slot Aluminum Extrusion 10 S 1010 x 24 N - eBay (item 220327634447 end time Jul-03-10 10:25:11 PDT)
It's 1x1 inch, 24 inches long. It has a LOT of air surface to it, which should provide excellent cooling for a laser. No fins, except the T-shapes that extrude from the middle. The long length means you get multiple heatsinks out of it too.

Anyone ever tried these before?

Do you think it would make a good heatsink for lab use? Heck, you can even put a fan on the end and it would get some good air flow between the T's

**8020 T Slot Aluminum Extrusion 25 S 25-2503 x 48 N - eBay (item 330294700458 end time Jul-08-10 08:37:05 PDT)
This would be nice for a peltier system, they have some with 3 and 4 sides too.
There's no dimensions but it looks like the center wouldn't accommodate a 12mm module. Good idea!

Dave
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