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fixing a heatsink?

post #1 of 27
Thread Starter 
I would like to know if there is a way to restore the "perfect flat" surface of a heatsink(the part that actually comes in contact with the CPU). Like if it had small grooves in it or something, how could I fix that?
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post #2 of 27
How could you fix small grooves? Do you mean, like the grooves are actually cut out, or it is just bent, and you need to bend it back?
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post #3 of 27
Small grooves prolly do not matter... 1-2 cm long any direction a hair or 2 deep wont make any different... AS5 fills in the gaps... if these grooves are deap your going to have to do some sanding and possibly some mounting modding
    
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post #4 of 27
lap it.
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post #5 of 27
Oh, I see what you mean. OK, well yeah filing (file+ing) them down is good for kinda big grooves. But for the big ones, I would either get a new heatsink, or cut it off, and file it down to a smooth flat surface.
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post #6 of 27
Thread Starter 
Quote:
Originally Posted by gcraw5100
lap it.
what is this and how would I go about doing it?
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post #7 of 27
use this lapping kit, it is sanding the surface perfectly flat and polishing the surface mirror smooth,it can drop your temps about 2-3 c too...... check this site for a good lapping kit...http://www.easypckits.com/
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post #8 of 27
Lapping is taking a very fine piece of sandpaper and making the surface super flat and shiny It will also transfer heat better, But you cannot lap the heatsink to much for really deep grooves or it might fit loose, but under normal lapping conditions it will not be loose. You can get lapping kits on frozencpu.com website.
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post #9 of 27
Quote:
Originally Posted by gcraw5100
Lapping is taking a very fine piece of sandpaper and making the surface super flat and shiny It will also transfer heat better, But you cannot lap the heatsink to much for really deep grooves or it might fit loose, but under normal lapping conditions it will not be loose. You can get lapping kits on frozencpu.com website.
Not JUST a fine grit sandpaper, but multiple grits.

From 400 to 2000 (I think), there's about 5 variations between 400 to 2000 that you should get to lap it, and you take a marker, and make an x on the surface, make a figure 8 motion on a sandpaper that is fixed to the desk so it won't move.
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post #10 of 27
Quote:
Originally Posted by lightsource
Not JUST a fine grit sandpaper, but multiple grits.

From 400 to 2000 (I think), there's about 5 variations between 400 to 2000 that you should get to lap it, and you take a marker, and make an x on the surface, make a figure 8 motion on a sandpaper that is fixed to the desk so it won't move.
ya pretty much, but you dont want to do it on a desk... you want to do it on a piece of glass to insure that it is super flat...
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