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post #881 of 8596
Quote:
Originally Posted by Darylrese View Post

From what i understand you just sandpaper the surface down a little to smooth off the block to a shiny finish but thats a little scetchy. I saw the guide in this thread but again itg doesnt go into much detail. Id like to know exactly what im doing before i give it a go..

The shiny surface part isn't that important; the *flattening* part, however, is.

Your not working to polish the surface of the cooler. Your working to actually cut away enough copper so that any convex/concave aspects of the block surface are flattened. Lapping would be a lot easier if all we were trying to do is make things shiny. But the fact is that a lot of blocks/surfaces are nowhere near being flat and it can take a hell of a lot of sanding to get it done (case by case basis, though). I've lapped some CPUs/Blocks that were done in an hour and others that took me multiple hours to get flat. My TRUE lap job nearly killed me. 4 hours of sanding. It was awful. LOL ...

Once it's flat, you can finish with 600 grit and you'll be fine but if you want to polish it to a mirror, then that's fun too but lots of tests have showed no significant gain in mirror vs non mirror surface finishing.
    
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post #882 of 8596
I used 1200 grit and finnished with 400 grit. No oil, just dry sand to mirror Finnish. Took an hour or so
post #883 of 8596
1.150v is considered the highest 'safe' voltage for a GTX 580 i believe. Im happy to run it at 1.150v.

Hmmm my only worry with the lapping is cant you make it farr WORSE if you dont sand evenly? How do you know when its flat enough?
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post #884 of 8596
Place sandpaper on a flat surface and wipe the pump on that, not in a circle.... But Bach and forth
post #885 of 8596
thanks mate, ill prob give it a go when my bracket arrives.

Anyone know how long it takes for postage from DWood to the UK? Only ordered it about a week ago. My temps are slightly higher tonight, 30c idle and it got to 63c in game earlier with 980mhz overclock. My ambient temps are up though.
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post #886 of 8596
Quote:
Originally Posted by Darylrese View Post

1.150v is considered the highest 'safe' voltage for a GTX 580 i believe. Im happy to run it at 1.150v.
Hmmm my only worry with the lapping is cant you make it farr WORSE if you dont sand evenly? How do you know when its flat enough?

Easy, Get a piece of plate glass. I like to use a shelf from my mini-fridge. And put the sand paper on that then sand away.

I also like to use a little water between the sandpaper and the glass. The water acts as a bond element to keep the sandpaper from moving and helps adhere the sandpaper to the glass so it doesn't ruffle. thumb.gif

It makes it TONS Better! Trust me! Just make sure when you sand you keep the cooler flat! Common sense.
post #887 of 8596
sounds easy enough. What paper do you use and how do you know when its done?
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post #888 of 8596
Should be here in next couple days buddy, mine took just over a week to come.
post #889 of 8596
Thread Starter 
Quote:
Originally Posted by Darylrese View Post

sounds easy enough. What paper do you use and how do you know when its done?

I started off on 200 then 600 then 800 then 1000 then 2000....then my arm fell off. lol

You will know when you get it perfectly flat. I used a rough 200 grit to get it flat and you can tell by the marks left on the heat plate. Then step up to a finer grit until you reach a smooth finish.

The local autozone carries all the fine wet/dry paper needed and was cheap as well. Taped them to a glass plate from a coffee table. Pretty easy process.
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post #890 of 8596
Crap, did I list my grit backwards......stupid, stupid LOL
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