Originally Posted by Trogdor
Wet sanding will get more of the marks out but you'll have to be careful with the water and be sure to get all the residue off left by the soap or other materials you use or it may get you a negative effect.
IMO you're putting a bit too much work into lapping since some people don't even go to 2000 grit and have great results. You're going to be using some TIM yet so I wouldn't worry about the real fine swirls. Also, if you're not happy with the temps you can always take it down and use whatever method you like to get the fine swirls out.
Agreed. I would not DREAM of wet sanding my processor but it's likely the best way to get finer sanding out of 2000 grit to get a near perfect mirror.
For me I was perfectly flat at 1500 grit with a fair mirror finish. Remember, the point of lapping is not to have a shiny surface but a FLAT surface. Everyone who has done it will notice the high and low spots on there processor after so many runs from 800 to 1000 grit.
I went to 2000 grit to get that final touch done and it looked near perfect.
once you have a super thin layer of compound on the processor your good to go. I recommend OCZ Freeze Extreme
. Goes on like bubble gum, NO spreading or wait required.