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OCN Lapping Gallery - Page 4

post #31 of 68
Quote:
Originally Posted by thx1138 View Post
I don't use polish. I thought about it but I figured it would be a substance getting in the way of the TIM and the surfaces of the heat sink and cpu. I also believe in functionality over shiny-ness. After going to 2000 and after doing a few reps of 4 rotations and 30 up and down movements per rotation I decided to keep going up and down without doing any rotations except for a 180 which keeps the scratches in the same direction and continued to do that on the already worn 2000grit. The more worn down the sand paper becomes the finer the scratches become. That was kind of a method I discovered while doing the heatsink that seemed to really work well to make it nice and shiny. Also after doing alot in the same direction I did a few in the opposite direction before stopping which seemed to make it look better.

Hope that made sense. You just have to experiment to see what works for you and if it makes you feel better anything above 1200 is just for show so even if it isnt uber reflective like mine its still going to perform the same. Good luck.
1. That's why you clean it with isopropyl rubbing alcohol before you use it. The alcohol will remove any residue left by the polishing compound.

2. I've heard anything over 800 is really just for show.
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post #32 of 68
Thread Starter 
Quote:
Originally Posted by BlackOmega View Post
1. That's why you clean it with isopropyl rubbing alcohol before you use it. The alcohol will remove any residue left by the polishing compound.

2. I've heard anything over 800 is really just for show.
Never claimed to be a rocket surgeon
post #33 of 68
Quote:
Originally Posted by thx1138 View Post
Never claimed to be a rocket surgeon
Ah wouldn't that be a CPU surgeon

I would think that Intel laps the equipment they use to make the CPU
lids, not machine them after they have been glued on to a fragile and expensive electronic device.

I was thinking you could probably make something using a CPU socket
off of a mother board as a hold down.

Maybe just a fixture to hold it steady in a surface grinder
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post #34 of 68
This is one I did on a Q9400 awhile back. Ebay'ed it a couple weeks ago. Only reason I happen to have pictures of it was for Ebay. Wasn't sure how well it would sell, but much to my surprise it sold the same day I put it up.
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post #35 of 68
Thread Starter 
Nice! Hope you werent using that stock cooler with it. Good job on the sale. Do you plan on lapping your Q9550? Nice oc btw
post #36 of 68
I used a TuniQ Tower 120 extreme on the Q9400. That stock cooler I packed up along with the Q9400 when it sold. My Q9550 isn't lapped, but it stays nice and cool under water anyway, 55c under load, so just haven't felt the need to lap it.
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post #37 of 68
I lapped my Phenom II finally but I couldn't flatten it out fully like you all did. I used 400, 600, 800, and 1000 grit and there was a faint valley left. The center and edges were all flattened but the space right in the middle body of the CPU was still covered. I can still see the words "Phenom II".

Did I get that one oblong CPU you think?
     
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post #38 of 68
Just means you have more work to do, lol. It is a time consuming process. You need to find a very flat surface on which to place your sandpaper and sand away till the finish across the face is uniform. I generally stick with 400-600 grit until it is and then finish up with 1000-2000 grit for the mirror finish. And if I am really up for it I will use some metal polish to remove any light scratches or blemishes. That's really overdoing it a bit, as all you want to obtain is truly flat, smooth surface across the face of the cpu.
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post #39 of 68
this is some amazing lapping. i should ge a lapping kit myself.

+rep
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post #40 of 68
Here one of my old Q9550's is, just happen to have these pics still.





Only bad thing is they can look nasty from the copper being exposed to the air and what not like heat etc. But still flat
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