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Lapping Sempron

post #1 of 5
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Hi

I'm getting a C2D soon and thought I'd lap an only Sempy 2800+ I had lying around for practice. It all seemed to go okay. I started at 240 grit and removed the nickel plating, worked through 320, 400, 800, 1200 and 1500. It seemed okay. When I got it to shine with the 2000 grit, I noticed that the edges weren't as worn down (I've got it on a very flat solid chunk of glass.)

Any advice?

I rotated 90 degrees throughout the process and am pretty sure I gave it a pretty even go.

I'm just not too sure on a couple of things...

-How hard should I be rubbing?
-How do I make sure the edges are even, I don't even know if this is a real concern?
-How long should I spend on each piece of sandpaper?
-Any other tips?



Thanks
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post #2 of 5
WOW that's a really good job!

You shouldn't really be pushing alot... maybe so you can feel a big fiction, but still not alot

The edges being even will only be a concern if they're taller than the middle

You should spend as long time on sandpaper that you can't see the scratches from the previous sandpaper. Another way of doing this is drawing a X on whole the CPU including the edges, when everything is sanded down, you can move on to the next grit, redoing the X method.

Another tip is to use water... too much is better than too little. Though, I'm not sure on this with CPU's. It's not like you shoud lap it totally soaked, it's just like putting a bit of water (like 10 ml) and lap ahead.
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post #3 of 5
Good job, Mirror Mirror on the Socket who is the Geekest of them all
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post #4 of 5
Quote:
Originally Posted by s-twig View Post

-How hard should I be rubbing?
-How do I make sure the edges are even, I don't even know if this is a real concern?
-How long should I spend on each piece of sandpaper?
-Any other tips?
- Hard, but don't put all your weight on it. With each sandpaper take it easier.
- place the sandpapers on a glass surface while rubbing. This would ensure the evenness of the edges.
- until the sandpaper can no longer lapp, until it's filled with debris from the IHS
- be careful not to bend any pins, after lapping the CPU should work better, not worse.
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post #5 of 5
...Or just pop off the IHS on the Sempron.
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