A quick CPU Lapping question.

[Antec-User]

How can u be sure that you are creating a completely flat surface with the lapping process?

Sanding block? I'd be concerned about rolling the edges over.

 

[veedubfreak]

tape the sand paper down to a thick piece of glass on top of a flat table. Ideally a glass table with good 1/2" glass will be almost perfectly flat.

 

[Antec-User]

^ Ahh ok.. I'll do my 9950 BE I've got laying around as practice. From what I've read, those need it due to their high corners.

 

[toxicity_27]

I used our glass picnic table. What veedub said is what I believe is normally recommended.

 

[veedubfreak]

i lapped both my q6600 and my true. Just remember to turn the cpu 90 degrees every 5-10 swipes. I started with 80 grit, then 120, then 400. The idea is flat, not so much shiny. Each time you move down grit, use a sharpie and color the whole cpu, it will show low spots.

 

[toxicity_27]

i lapped both my q6600 and my true. Just remember to turn the cpu 90 degrees every 5-10 swipes. I started with 80 grit, then 120, then 400. The idea is flat, not so much shiny. Each time you move down grit, use a sharpie and color the whole cpu, it will show low spots.

Now that's something I didn't do. Wish I would have read that somewhere. Good advice.

 

[veedubfreak]

Now that's something I didn't do. Wish I would have read that somewhere. Good advice.

Just an old trick from doing auto body work.

 

[Antec-User]

^ Good idea... You're not in Vegas are you? lol.. I know a VW guy in Vegas that manages a Bodyshop.. I did some photo shoots of his car for him while I was there..

 

[veedubfreak]

nah, but my first car was a 68 bug that i built from the ground up, including all bodywork, engine, electrical, etc. I dont do bodywork anymore I'd rather pay someone to do it.

 

[yzmxer608]

I have a question about lapping too, I don't want to hijack the thread but I didn't feel it was necessary to start a new topic.

Is lapping the cpu and lapping the heatsink two different things? Sometimes I see people refer to lapping as doing it to a heatsink, and others refer to it as doing it to a cpu.