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Lapping my venice with a dremel HELL NO!

post #1 of 11
Thread Starter 
I was thread surfing a little while back saw a procedure on lapping and basicly applied the general lapping principles to a dremel 400xpr. my IHS had scratches and a few shallow gouges in an attempt to remove old AS5 like a caveman. So I started off using the polisher wheel, I improvised and attatched it to the screw attatchment so i could sand with a flat wheel. I did this for about a half hour and got a bit antsy... so I threw the metal grinding wheel -.- onto me trusty dremel and grinded away, as i got to the copper portion of the IHS I reattatched the polishing wheel to smooth it up, applied some AS5 threw on my Scythe FCS-50 booted up perfectly (with the repair of half a dozen bent pins doh) saw an immediate 2C idle drop . nerve wracking
    
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post #2 of 11
Thread Starter 
who thinks i should make a guide on this?
    
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post #3 of 11
Why is the title "HELL NO!" If you did it and it worked good? And there's already a FAQ on lapping CPU's, just not down to the copper.
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post #4 of 11
getting down to the copper is the poiint, thats what improves your heat transfer because you dont have another boundary layer from another type of metal, gotta be careful though
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post #5 of 11
Thread Starter 
The "Hell no" is in the context of (oh no he didnt) or (what a dumb B@$74Rd why would he try that). It worked great... my temps idle are 70F(20C?) load they are about 73F(23C) after 4 hours of bf2 and the AS5 hasent settled yet..
    
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post #6 of 11
That's just scary man.... running it under a grinding wheel. I would think that this would cause the heatspreader to not be perfectly level with some nooks and crannies that would cause uneven heat dissapation or cause air to be trapped between it and the heatsink.
    
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post #7 of 11
Ehh... Dremel + CPU = baaaaddd. You are lucky you didn't desroy the CPU core, the pressure from the grinding wheel could have damaged your processor, if it didn't go right through the IHS. I lapped my P4 with 1000-12000 (either 12000 or 16000, I can't rember) grit sandpaper for 4 hour, and I just got rid of the smaller scratches and leveled out the processor. I didn't go all the way through the copper, since most P4 SKT 478 processor IHSes aren't perfectly level so I thought that I would flatten it out. That is really the only reason why I lapped it. My temps only dropped about 1 or 2 C.
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post #8 of 11
1 to 2 deg drop worth 5 hours of elbow grease and voiding your warranty?

I think i'll pass
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post #9 of 11
Quote:
Originally Posted by n19htmare
1 to 2 deg drop worth 5 hours of elbow grease and voiding your warranty?

I think i'll pass
The processor was yanked out of my old HP (3 years ago)... Since the processor was OEM, it had no warranty.
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post #10 of 11
Quote:
Originally Posted by Some_Idiot2
The processor was yanked out of my old HP (3 years ago)... Since the processor was OEM, it had no warranty.
I see. But I was mostly referring to new processors that are retail. I really don't think it's worth it. Or even removing the IHS, I don't even think that's worth it.... or maybe I'm just a sissy.
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