Originally Posted by Juggalo23451
why is that. i though it was best to stop at a high grit like 1500 or 2000 grit for better contact
Once it gets to the 800 grit point then the amount of return you get is almost nothing to go further. If you take 2 of the same heatsinks and lap one to 600 grit, and the other to 2000 they will show the same temps. if you do go to a mirror finish make sure you use MUCH less TIM than you normally would.