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Do you reuse Sandpaper for lapping?

1010 Views 9 Replies 8 Participants Last post by  wallyworld96
My BLACK TRUE was bought lapped by CrazyPC. And when I had installed it, I forgot to check the flatness of it. I was wondering if I should lap it for mirror finish, since I don't remember how it looks like, but I assume it's not mirror finished. Even if not for the mirror finish, I wonder would it yield any better temperatures? Even by 1C?
I just want to know because I'm planning to do some heavy modding on my TRUE and tests the temperatures.

edit:
Since I got the CrazyPC lapping thing confirmed. I'd like to know if you guys reuse sandpaper for lapping or get new sheets of each grit everytime?
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I purchased a pre-lapped TRUE from CRAZYPC.com

It passses the razor blade test, where you put a clean blade to it... there was zero gaps on either side. The thing was 100% flat. It even made a flat footprint of ink on my marble table, that was also machined flat.

CrazyPC does a flawless job of lapping the Heatsinks. I think you are fine and shouldnt bother touching it.
 
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