Originally Posted by Snerp
No I don't, you are reading it wrong...It makes sense to me
I was saying if he is starting off with a factory lapped HSF there is no reason to start with the coarser grits.
Yes there is... Many stock heatsinks, even though they may be factory "lapped" they still tend to be not flat. Many heatsinks and IHS' are concave, which sint flat. So to make it flat, you need to start with ~200 grit paper to take the matel off from the outsides, making it flat. Trying to get rid of a concave surface with 600+ paper would take forever, and be a waste of time/energy because all you would have to do is start with a lower grit.
You can see that the cooler form my 6800gs was actually convex, thats why the outsides of the surface are not polished looking.
The only reason to start from 600+ is to make it shiny.
EDIT: Im not saying you HAVE to start with 200grit or so, im just saying that many ihs' and heatsinks need to be done that way. If you start with 600, and notice that the middle, or the outsides are not being snaded down like the rest of the surface is, then you need to go to a coarser grit.