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Lapping with max 2000 grit?

post #1 of 8
Thread Starter 
I was on frozencpu and saw their lapping kit, which seemed sorta overpriced for the small quantity of sandpaper you get. I could pick up more sandpaper at a local hardware store, for less, but they dont carry 2500 grit like on the frozencpu lapping kit.

Is 2000 grit sufficient for a mirror finish?
post #2 of 8
Probably, if you use water or oil. There may be some minor scratches visible without polish, however.

Not that you need a mirror finish. Anything past ~800 grit has no perceptible influence on performance, in my experience. I generally only go higher than a thousand to remove worked in TIM or corrosion from a part I've already lapped.
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post #3 of 8
Temps did not vary at all on my i3 when i finished with a 1500 grit and redid lapping with a 10 micron sandpaper.

At best, the temps will be reduced by 1c, but IMHO, not worth it.
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post #4 of 8
It sort of is, i used water when i did mine but i cant recommend that to you. But once i was done i used a metal polish and a nice smooth rage that was pinned down flat, so all i had to do was rub very vigorously. And yes it is just like a mirror then. But if you see very very faint scratches are there still, just need to get more heat into the polishing

So it can be done no worries, but what makes the gloss is the heat from rubbing it very vigorously when polishing it

Yes wont lower temps any further, but it will look sexy

Yes and like blameless said, i started at 800(not 400 or 600), wow i thought my post was the first, we were all posting at the same time
Edited by Tigerpaws - 8/20/11 at 9:28pm
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post #5 of 8
My temps dropped only 1-2c with 1000grit paper.
post #6 of 8
if you sink is dinged up as bad as mine you will see a 3~5c max drop
1~3 is the average
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post #7 of 8
On my i7 950, i got idle 1c lower and 4c lower up top. On my old 775, i got 2c+ on idle and around 8c benching up top. But the difference there is the new coolers are more efficient, and have read that LN2 makes no difference at all. So your cooler efficiency will also play a part of the temp drops
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post #8 of 8
I lapped upto 2000 grit and got over 15c drops now(and I overclocked more too, so the temp difference is probably higher now), also used liquid ultra which was awesome.
    
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