Re: Heatsinks

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Jim Lux" <jimlux-at-earthlink-dot-net> 

At 05:37 PM 9/22/2004 -0600, you wrote:
>Original poster: "Chris Swinson" <tesla-at-cps-electronics.co.uk>
>
>----- Original Message ----- From: "Tesla list" <tesla-at-pupman-dot-com>
>To: <tesla-at-pupman-dot-com>
>Sent: Wednesday, September 22, 2004 7:19 PM
>Subject: Re: Heatsinks
>
>
>>Original poster: "Jim Lux" <jimlux-at-earthlink-dot-net>
>>How big and in what configuration?
>>Brand new raw extruded heat sinks tend to run very close to what any other
>>aluminum extrusion costs (check the price of aluminum), assuming you're
>>using an existing shape.
>>Machined heat sinks, in any form, are expensive.
>
>
>The one I am looking at ive uploaded here.....
>
>http://www.aqtq39.dsl.pipex-dot-com/temp/heatsink.jpg
>
>its the bottom one, perfect in everyway...... apart from price :(
>
>
>Cheers,
>chris

And how much are they asking for it?  It's a beast, 10 pounds per foot... 
Aluminum extrusions usually run around $3-4/pound, so you're looking at 
$40/foot (probably more, it's a pretty complex extrusion).

And that would be unfinished, while the Wakefield part is anodized or 
iridited and probably has a machined flat surface, which drives up the price.

I see that Mouser wants $140 for the 7" long chunk of the stuff in black 
anodized.

Perhaps water cooling and a cold plate would be a better solution?