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Still confused about lapping.

post #1 of 12
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when you lap, so you put the glass down... and you tape the sandpaper DOWN to the glass and slide the CPU over the sandpaper?

i dont understand how that would be flat because sandpaper can have bubbles
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post #2 of 12
Quote:
Originally Posted by xsabrewulf
when you lap, so you put the glass down... and you tape the sandpaper DOWN to the glass and slide the CPU over the sandpaper?

i dont understand how that would be flat because sandpaper can have bubbles
Well im no Expert but you have to use Different Grades of Sandpaper at Different times to get the Propper LAP to get the Surface of the CPU totally smooth..Ill fetch a guide for you.
post #3 of 12
post #4 of 12
Wow thats cool. Maybe ill try that one day...
    
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post #5 of 12
it's pretty easy once you get the hang of it. you can achieve some pretty good results

here's my lapped gpu block before and after.



and after

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post #6 of 12
Sweet!!
    
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post #7 of 12
This was done like this: right off the belt sander, 220 emery cloth, 400 emery cloth then to 1200. all dry except the belt sander because I had to take so much off.
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post #8 of 12
lol belt sander...nice.

I did my cpu ihs and my BT by hand....took me about 3 hrs to get both done.

I found out my cpu ihs had a nice dip in the middle......took me ages before the centre of the thing turned to copper instead of the zinc plating.

BT was much easier
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post #9 of 12
Next time be more aggressive on the first cut, get it flat with a coarse paper first, of course you can't take a belt sander to an IHS but you could go 400 to 600 to 1200.
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post #10 of 12
A neet little trick to show off your results. Mark with blue or black magic marker. That will give off the previous surface as you lap.
Personally, I don't use that because my many years of experance allows me to read the grit as I sand, but to those who are unfirmiliar with the grits apperance the marking is a great guide!
    
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