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Stone as Heatsink
Stone as Heatsink
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Old 12th January 2018, 01:11 AM   #31
CharlieLaub is offline CharlieLaub  United States
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Originally Posted by johnnyx View Post
There are doubters, but alumina ceramic works.
Siemens use them in Sitop 3 phase power supplies; (URL="https://uk.rs-online.com/web/p/thermal-gap-pads/1777773/"][/URL]
Guess what alumina is? It's a METAL oxide. It is absolute NOT a stone.
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Old 12th January 2018, 01:13 AM   #32
chrisb is offline chrisb
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Charlie- now you’re talking - just be sure to cryo-treat the stone slabs, then apply several coats of C-47 or your favourite majik juice - during a total solar eclipse, of course- otherwise the voodoo doesn’t work
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Old 12th January 2018, 01:14 AM   #33
CharlieLaub is offline CharlieLaub  United States
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Originally Posted by jcx View Post
Sliver bullion bars would be cheaper and better
Silver is a stone? I learn something new every day on this web site!
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Old 12th January 2018, 01:15 AM   #34
CharlieLaub is offline CharlieLaub  United States
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Originally Posted by chrisb View Post
Charlie- now you’re talking - just be sure to cryo-treat the stone slabs, then apply several coats of C-47 or your favourite majik juice - during a total solar eclipse, of course- otherwise the voodoo doesn’t work
Don't forget to EnABL it first!
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Old 12th January 2018, 01:15 AM   #35
scottjoplin is offline scottjoplin  Wales
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Hehe, I mean hEHe
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Old 12th January 2018, 01:36 AM   #36
CharlieLaub is offline CharlieLaub  United States
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Originally Posted by johnnyx View Post
There are doubters, but alumina ceramic works.
Siemens use them in Sitop 3 phase power supplies; (URL="https://uk.rs-online.com/web/p/thermal-gap-pads/1777773/"][/URL]
Technically, both corundum and pyrite (fools gold) are rock-like and have relatively high thermal conductivity for a mineral if relatively pure, but still about 10x less than, e.g., aluminum. The former is primarily aluminum oxide and the latter is iron sulfide. Not really what I think of as a rock, just like diamond is technically a "rock" but you probably won't find diamonds out back in the yard.... I think the OP is talking about your typical silicate rock here.

But technically speaking, if you found yourself in possession of a "rock" of one of these two minerals, you could get some almost useful heat transfer out of it. The big question is how to form cooling fins with these minerals to transfer the heat to the air? Inquiring minds want to know!
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Old 12th January 2018, 02:41 AM   #37
Refugee1 is offline Refugee1  United Kingdom
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The rock type for a heat sink must surely be bauxite
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Old 12th January 2018, 09:50 PM   #38
chrisb is offline chrisb
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Charlie - indeed, all the heat sinks I've ever seen / used on audio gear or computers rely convection and /or forced air cooling for dissipation of the heat from relatively thin finned "radiators". Of course, I've never taken my iMac or Mini apart, so they might be doing something different there in the name of aesthetics.
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Old 12th January 2018, 11:17 PM   #39
multi-volti is offline multi-volti  United States
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PRR, you ‘rock’!
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Old 18th February 2018, 11:54 AM   #40
Jollygreenaudiophile is offline Jollygreenaudiophile  United States
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Stone as Heatsink
BEEF!?< Has better thermal conductivity than carbon steel!?$#)&??
Well, I can just go die happy now!
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