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Old 06-23-2011, 12:27 PM #1
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Arrow Aluminum Small Heatsinks !!!!!

I have found these small aluminum heatsinks in a store in my town. I havent bought them yet because i wanted to know if someone wants them. These are 3$ for 10 heatsinks and 5$ for 20. [COLOR="Red"](not including shipping) Shipping worldwide ! Price for shipping may vary from country to country ! It will probably be about 3$ for the most countries ! I can drill you some holes but with a small cost !
For other options for shipping and drilling pls pm me !


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[IMG] [/IMG]


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Old 06-23-2011, 09:09 PM #2
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Default Re: Aluminum Small Driver Heatsinks !!!!!

Something like this seems better and much cheaper: $2.56 - Aluminum Cooler Heat Sink Chipset for RAM Memory - W Type (8-Piece Set) - Hardware Parts

Sorry, but I just don't think you will have any takers.
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Old 06-24-2011, 06:49 AM #3
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Default Re: Aluminum Small Driver Heatsinks !!!!!

First of all I don't know if these have better heat dissipation but mine can take a massive amount of heat ! And second yours can't act as driver heatsinks because they very big !! And last but not least I would never trust dealextreme.com
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Old 06-24-2011, 07:29 AM #4
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Default Re: Aluminum Small Driver Heatsinks !!!!!

With how small the heatsink needs to be for a driver in a space-limited host, there are tons of extremely cheap options. And since aluminum isn't hard to cut through with a hacksaw or even a small coping saw, it's very easy to make your own if you have the right thickness of aluminum.
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Old 06-24-2011, 11:51 AM #5
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Default Re: Aluminum Small Heatsinks !!!!!

Good clear pics but.. no measurements.
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Old 06-24-2011, 01:18 PM #6
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Default Re: Aluminum Small Heatsinks !!!!!

what does it do
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Old 06-24-2011, 03:21 PM #7
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Default Re: Aluminum Small Heatsinks !!!!!

@HaloBlu

The measurements are 2,8x1,5cm . And its height is 0,8cm. Are you interested ???

@TRGDGN

Its block of aluminum wich takes the heat from the object that is stucked to !!!
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Old 06-26-2011, 12:39 AM #8
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Default Re: Aluminum Small Heatsinks !!!!!

Pennies work good too, and you can get 100 for $1.
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Old 06-26-2011, 01:52 AM #9
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Default Re: Aluminum Small Heatsinks !!!!!

Well with U.S. pennies, it's good to keep this in mind:

1864–1942, 1946–1962: bronze (95% copper, 5% tin and zinc)
1944–1946: brass (95% copper, 5% zinc)
1962–1982: brass (95% copper, 5% zinc)
1982–present: 97.5% zinc, 2.5% copper (core: 99.2% zinc, .8% copper; plating: pure copper)

And with U.S. nickels:
"nickel coins from 1866 to the present have been composed of 25% nickel, 75% copper."
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Old 06-26-2011, 03:55 AM #10
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Default Re: Aluminum Small Driver Heatsinks !!!!!

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Originally Posted by jimdt7 View Post
First of all I don't know if these have better heat dissipation but mine can take a massive amount of heat ! And second yours can't act as driver heatsinks because they very big !! And last but not least I would never trust dealextreme.com
First of all, they aren't "mine", they are a type of heatsink I linked. Secondly, it can act as a driver heatsink, just cut the thing in half if needed. As for heat dissipation, I have one of these (not this exact model, but same sort of thing) on a LM317 running at 1.25A w/ a 445nm and 3x 18650s in a custom host, and I must say that even though the thing is small, it hasn't burnt out on me yet. (Although I do keep run times very short.)

Bottomline, I don't know why you're bothering to sell small pieces of aluminum when there are cheaper/better alternatives - nickels, pennies, any piece of aluminum scrap, or (questionably best, the ones I linked).

P.S. - As for size, the ones I linked aren't "very big" and therefore not good for drivers, they are smaller than yours. Look at the caliper pics, they are 1.32cm x 1.84cm. And Dealextreme.com is a great website, it just got a little large so now their customer service is a little slow. Many websites we all love have emerged from it (like FocalPrice). And if it's too slow for some of you, here's some people who may ship faster: 8 Pcs Cooler Heat Sink Aluminum For DDR DDR3 RAM Memory | eBay Aluminum Memory Cooler Heat Sink For DDR DDR2 DDR3 RAM | eBay 8Pcs DDR DDR2 DDR3 VGA RAM Memory Cooler Heat Sink New | eBay

Edit: By the way, the pack I purchased came with thermal compound pre-applied on the back with a peel label, making it very easy to use.

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Old 06-26-2011, 04:12 AM #11
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Default Re: Aluminum Small Driver Heatsinks !!!!!

The problem with those finned heatsinkes from DX is they are designed to be air cooled. A good driver sink is in thermal contact to the host so the entire host body becomes the driver heatsink. A bare flexdrive will overheat in about 20-30 seconds set to 1.5A.
With an isolated .5 cubic inch aluminum sink will go about 90-120 seconds. And a heatsink that is in good thermal contact with the host body will run almost continuously or shall I say you will have to worry about the diode overheating long before the driver even gets close.

Flexdrive Driver Heatsink for Continuous driver duty cycle @ 1.5A

Last edited by DTR; 06-26-2011 at 04:14 AM.
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Old 06-26-2011, 04:32 AM #12
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Default Re: Aluminum Small Heatsinks !!!!!

Nice tutorial DTR, I must have missed it before. And yes, I know finned heatsinks are better for air-flow systems, so I agree that pennies or something similar would work better for typical hosts. I just like these because I could use them for all types of electronics projects to add a quick heatsink to a transistor, small mosfet, even small chips in an xbox 360. They work alright on my LM317 builds, but since everyone lately is driving 445's at high powers, a way of connecting the driver to the host seems almost required.

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Old 07-03-2011, 08:43 AM #13
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Default Re: Aluminum Small Heatsinks !!!!!

So does anybody want any ????
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Old 07-03-2011, 10:31 AM #14
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Default Re: Aluminum Small Heatsinks !!!!!

I'm sorry, but these heatsinks are lame. These look like someone took some aluminum railing and just chopped it up into pieces. How would anyone even use the heatsinks, let alone for lasers? There are no diode holes, no mounts for Aixiz modules, not even clasps or screw holes; you can't even attach these to a TO-220 chip except with glue. I also wouldn't even call those two elevated portions on the side "fins" rather just part of the aluminum rail.

If you want to sell them, you should drill them out and make them usable rather than just trying to sell them as is, or charging extra to drill them out into something else.
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