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18th Nov 2017, 11:07 AM #16Pink 10EE owner
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I would solder very thin pieces of copper together if I wanted a super cooler.
Cooling is done by surface area. The thinner the pieces, the more of them, the more surface area the greater the cooling.Gold, the colour of choice for the discerning person.
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21st Nov 2017, 07:42 AM #17New Member
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Ok the reason for "cutting" the fins into the piece of copper is to ensure the best thermal performance as any welded or "applied" parts will compromise coppers heat transfer qualities by forcing heat through solder or similar.
As for the answers im thankful but i think people are getting too deep : ) Im trying to find a way to cut the finest channels i can into copper. Short of making some sort of level slide system and using a steel razorblade to literally cut away at the copper though, it doesnt sound like there is going to be a quick solution!
Im now thinking if i use a X Y compound table and make a perfectly level slide for a blade, i could pass the blade over the copper and basically scratch a channel, move the table slightly and repeat. Would take a lot of time but its the only way i can think of cutting so finely into copper!
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21st Nov 2017, 08:42 AM #18Most Valued Member
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- Oct 2007
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With all due respect I'd suggest you are both overthinking this and didn't properly read the comments about how to construct this by stacking thin stock. The function of the solder is to do nothing more than hold the stack as one solid block, the edges of the strips are still the points of contact with the heat source. The difference in thermal properties between that and machining from a solid block of copper would be so negligible I would challenge you to demonstrate any measurable difference.
You could "scratch" away the copper as you suggest. You could also use a single hair to friction saw your way through the block. Each idea being as equally stupid, hence I'm wondering if this isn't actually a wind-up. That being the case I wish you well in your time-wasting journey.
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21st Nov 2017, 09:33 AM #19Most Valued Member
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21st Nov 2017, 10:45 AM #20Most Valued Member
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Indeed! The sliver of solder is between and separating the heat conducting fins, much like a layer of oxidisation ... therefore, if you're going to thermally saw your block of copper with a human hair, make sure you use OFC (Oxygen Free Copper), another area of quasi science where legitimate science is used to baffle a truck load of BS and make it sound legitimate!
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21st Nov 2017, 01:21 PM #21Most Valued Member
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- Apr 2012
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- Healesville
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EDM or wire cutting would be the way to go, how deep are your pockets
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